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11/01/2019 – Ephemeris – Previewing November Skies and a GTAS meeting

November 1, 2019 Comments off

Ephemeris for Friday, November 1st. The Sun will rise at 8:20. It’ll be up for 10 hours and 11 minutes, setting at 6:31. The Moon, 3 days before first quarter, will set at 10:13 this evening.

Let’s take a look at November skies. The time change back to standard time will set us back an hour on sunrise and sunset times, so it’ll be brighter in the morning and darker in the evening this Sunday. Out east in New York, the Sun is already setting before 5 p.m. It will never set that early here. The Sun is up for 10 hours 11 minutes today and that will dwindle down to 9 hours and 5 minutes at month’s end. The Sun reaches 30 and a half angular degrees above the southern horizon at local apparent solar noon, which is 12:25 p.m. this month.

The big event this month will be the transit of the planet Mercury across the face of the Sun on the morning of November 11th.  Mercury is too small to be seen with eclipse glasses from left over from the eclipse of two years ago.  Project the Sun’s image using a telescope or binoculars on a white card.  Don’t look through the instruments or finders.  The event starts at sunrise at 7:35 and runs to 1:04 p.m.  I’ll have more on it next week.

Tonight there will be the monthly meeting of the Grand Traverse Astronomical Society at 8 p.m. followed by a star party at 9 p.m, if it’s clear at Northwestern Michigan College’s Rogers Observatory on Birmley Road.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

November Evening Star Chart

November Evening Star Chart

Star Chart for November 2019 (9 p.m. EST November 15, 2019). Click on image to enlarge.Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 9 p.m. EST in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT).

November Morning Star Chart

November Morning Star Chart

Star Chart for November mornings 2019 (6 a.m. EST November 15, 2019). Click on image to enlarge. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Follow the arc of the handle of the Big Dipper to the star Arcturus
  • The Summer Triangle is in red.
  • TauR on the evening star chart can be used as the radiant for the North and South Taurid meteor showers.
  • LeoR on the morning star chart is the radiant of the Leonid meteor shower which peaks between the 16th to 21st.

Twilight Limits, Nautical and Astronomical

EDT
Traverse City Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-11-01 6h46m 7h20m 19h40m 20h13m 22h13m 6h46m 0.26
2019-11-02 6h48m 7h22m 19h38m 20h12m 23h10m 6h48m 0.36
EST
2019-11-03 5h49m 6h23m 18h37m 19h11m 23h09m 5h49m 0.46
2019-11-04 5h50m 6h24m 18h36m 19h10m 5h50m 0.56
2019-11-05 5h51m 6h25m 18h35m 19h09m 0h10m 5h51m 0.65
2019-11-06 5h52m 6h26m 18h33m 19h08m 1h12m 5h52m 0.74
2019-11-07 5h54m 6h28m 18h32m 19h06m 2h13m 5h54m 0.82
2019-11-08 5h55m 6h29m 18h31m 19h05m 3h14m 5h55m 0.89
2019-11-09 5h56m 6h30m 18h30m 19h04m 4h15m 5h56m 0.94
2019-11-10 5h57m 6h31m 18h29m 19h03m 5h16m 5h57m 0.98
2019-11-11 5h58m 6h33m 18h28m 19h02m 0.98
2019-11-12 5h59m 6h34m 18h27m 19h02m 1
2019-11-13 6h01m 6h35m 18h26m 19h01m 1
2019-11-14 6h02m 6h36m 18h25m 19h00m 0.97
2019-11-15 6h03m 6h37m 18h25m 18h59m 18h59m 19h45m 0.92
2019-11-16 6h04m 6h38m 18h24m 18h58m 18h58m 20h41m 0.85
2019-11-17 6h05m 6h40m 18h23m 18h57m 18h57m 21h46m 0.76
2019-11-18 6h06m 6h41m 18h22m 18h57m 18h57m 22h56m 0.66
2019-11-19 6h07m 6h42m 18h21m 18h56m 18h56m 0.55
2019-11-20 6h08m 6h43m 18h21m 18h55m 18h55m 0h09m 0.43
2019-11-21 6h10m 6h44m 18h20m 18h55m 18h55m 1h24m 0.31
2019-11-22 6h11m 6h45m 18h19m 18h54m 18h54m 2h39m 0.21
2019-11-23 6h12m 6h47m 18h19m 18h54m 18h54m 3h55m 0.12
2019-11-24 6h13m 6h48m 18h18m 18h53m 18h53m 5h11m 0.05
2019-11-25 6h14m 6h49m 18h18m 18h53m 18h53m 6h14m 0.01
2019-11-26 6h15m 6h50m 18h17m 18h52m 18h52m 6h15m 0
2019-11-27 6h16m 6h51m 18h17m 18h52m 18h52m 6h16m 0.02
2019-11-28 6h17m 6h52m 18h17m 18h52m 18h59m 6h17m 0.06
2019-11-29 6h18m 6h53m 18h16m 18h51m 19h54m 6h18m 0.12
2019-11-30 6h19m 6h54m 18h16m 18h51m 20h54m 6h19m 0.19

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

     Date   Time   Event
Nov  1 Fr          Venus: 20.8° E
     1 Fr  4:40 pm Moon Descending Node
     1 Fr  7:33 pm Moon South Dec.: 23° S
     2 Sa  2:31 am Moon-Saturn: 0.6° N
     4 Mo  5:23 am First Quarter
     5 Tu  6:41 pm South Taurid Meteor Shower: ZHR = 10
     7 Th  3:37 am Moon Apogee: 405100 km
     9 Sa  2:18 pm Venus-Antares: 3.9° N
     9 Sa  6:05 pm Mars-Spica: 2.8° N
    11 Mo 10:17 am Mercury Inferior Conjunction (Transit)
    12 Tu  8:34 am Full Moon
    12 Tu  5:57 pm North Taurid Meteor Shower: ZHR = 15
    16 Sa  3:48 am Moon Ascending Node
    16 Sa  8:52 am Moon North Dec.: 23.2° N
    18 Mo 12:15 am Leonid Meteor Shower: ZHR = 15
    18 Mo  5:11 am Moon-Beehive: 0.9° S
    19 Tu  4:11 pm Last Quarter
    23 Sa  2:54 am Moon Perigee: 366700 km
    24 Su  4:02 am Moon-Mars: 4.4° S
    24 Su  7:17 am Venus-Jupiter: 1.4° N
    26 Tu 10:06 am New Moon
    28 Th  4:59 am Mercury Greatest Elongation: 20.1° W
    28 Th  5:49 am Moon-Jupiter: 0.8° S
    28 Th  1:50 pm Moon-Venus: 2° S
    28 Th 11:13 pm Moon Descending Node
    29 Fr  5:36 am Moon South Dec.: 23.2° S
    29 Fr  4:12 pm Moon-Saturn: 1° N
Dec  1 Su          Venus: 27.9° E

All event times are given for UTC-4 hr: Eastern Daylight Saving Time or UTC-5 Eastern Standard Time starting the 3rd.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     November, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Fri  1| 08:20a  06:31p  10:11 | 07:36p  07:15a |      Set  10:13p   27%|
     |Sat  2| 08:21a  06:30p  10:08 | 07:35p  07:16a |      Set  11:09p   36%|
     +------+-----------------------+----------------+-----------------------+
     | EST  |      Time Change      |                |                       |
     |Sun  3| 07:23a  05:29p  10:05 | 06:34p  06:17a |      Set  11:09p   46%|
     |Mon  4| 07:24a  05:27p  10:03 | 06:32p  06:19a |F Qtr Set  12:10a   55%|
     |Tue  5| 07:25a  05:26p  10:00 | 06:31p  06:20a |      Set  01:12a   65%|
     |Wed  6| 07:27a  05:25p  09:57 | 06:30p  06:21a |      Set  02:13a   73%|
     |Thu  7| 07:28a  05:23p  09:55 | 06:29p  06:22a |      Set  03:13a   81%|
     |Fri  8| 07:30a  05:22p  09:52 | 06:28p  06:24a |      Set  04:14a   88%|
     |Sat  9| 07:31a  05:21p  09:50 | 06:27p  06:25a |      Set  05:16a   93%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 10| 07:32a  05:20p  09:47 | 06:26p  06:26a |      Set  06:19a   97%|
     |Mon 11| 07:34a  05:19p  09:45 | 06:25p  06:27a |      Set  07:24a  100%|
     |Tue 12| 07:35a  05:17p  09:42 | 06:24p  06:28a |Full  Rise 05:45p  100%|
     |Wed 13| 07:36a  05:16p  09:40 | 06:23p  06:30a |      Rise 06:18p   98%|
     |Thu 14| 07:38a  05:15p  09:37 | 06:22p  06:31a |      Rise 06:57p   94%|
     |Fri 15| 07:39a  05:14p  09:35 | 06:21p  06:32a |      Rise 07:45p   88%|
     |Sat 16| 07:40a  05:13p  09:33 | 06:21p  06:33a |      Rise 08:41p   80%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 17| 07:42a  05:12p  09:30 | 06:20p  06:34a |      Rise 09:46p   70%|
     |Mon 18| 07:43a  05:12p  09:28 | 06:19p  06:36a |      Rise 10:56p   60%|
     |Tue 19| 07:44a  05:11p  09:26 | 06:18p  06:37a |L Qtr Rise 12:09a   49%|
     |Wed 20| 07:46a  05:10p  09:24 | 06:18p  06:38a |      Rise 01:24a   37%|
     |Thu 21| 07:47a  05:09p  09:22 | 06:17p  06:39a |      Rise 02:39a   27%|
     |Fri 22| 07:48a  05:08p  09:20 | 06:16p  06:40a |      Rise 03:55a   17%|
     |Sat 23| 07:49a  05:08p  09:18 | 06:16p  06:41a |      Rise 05:10a    9%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 24| 07:51a  05:07p  09:16 | 06:15p  06:42a |      Rise 06:26a    4%|
     |Mon 25| 07:52a  05:06p  09:14 | 06:15p  06:43a |      Rise 07:41a    1%|
     |Tue 26| 07:53a  05:06p  09:12 | 06:14p  06:45a |New   Set  05:27p    0%|
     |Wed 27| 07:54a  05:05p  09:10 | 06:14p  06:46a |      Set  06:10p    2%|
     |Thu 28| 07:56a  05:05p  09:08 | 06:13p  06:47a |      Set  06:59p    7%|
     |Fri 29| 07:57a  05:04p  09:07 | 06:13p  06:48a |      Set  07:54p   13%|
     |Sat 30| 07:58a  05:04p  09:05 | 06:13p  06:49a |      Set  08:54p   20%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

10-01-2019 – Ephemeris – Previewing October skies

October 1, 2019 Comments off

Ephemeris for Tuesday, October 1st. Today the Sun will be up for 11 hours and 43 minutes, setting at 7:23, and it will rise tomorrow at 7:41. The Moon, 3 days past new, will set at 9:28 this evening.

Let’s look at the skies for the month of October. The sun will still be moving south rapidly. Daylight hours in the Interlochen/Traverse City area will drop from 11 hours and 43 minutes today to 10 hours 14 minutes on the 31st. The altitude of the Sun above the southern horizon at local noon will be 42 degrees today, and will descend to 31 degrees on Halloween, also in the Interlochen area. The Straits area will have the Sun a degree lower. Local noon, when the Sun is due south will be about 1:30 p.m. in Interlochen. The planets Saturn and Jupiter will appear low in the southwest in the early evening, and Venus just might be visible low in the west-southwest a half hour after sunset by month’s end.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

October Evening Star Chart

October Evening Star Chart

Star Chart for October 2019 (9 p.m. EDT October 15, 2019). Click on image to enlarge.Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 9 p.m. EDT in the evening and 6 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

October Morning Star Chart

Star Chart for October mornings 2019 (6 a.m. EDT October 15, 2019). Click on image to enlarge. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Leaky dipper drips on Leo.
  • Follow the arc of the handle of the Big Dipper to the star Arcturus.
  • The Summer Triangle is in red.
  • DracR – Draconid Radiant – Peak 9th – Zenithal Hourly Rate = 10
  • OriR – Orionid Radiant – Peak 22nd – Zenithal Hourly Rate = 20

Twilight Limits, Nautical and Astronomical

EDT
Traverse
City
Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-10-01 6h08m 6h42m 20h30m 21h04m 21h28m 6h08m 0.13
2019-10-02 6h09m 6h44m 20h28m 21h02m 22h04m 6h09m 0.22
2019-10-03 6h11m 6h45m 20h26m 21h00m 22h46m 6h11m 0.32
2019-10-04 6h12m 6h46m 20h24m 20h58m 23h33m 6h12m 0.43
2019-10-05 6h13m 6h47m 20h22m 20h56m 6h13m 0.53
2019-10-06 6h15m 6h49m 20h20m 20h54m 0h25m 6h15m 0.63
2019-10-07 6h16m 6h50m 20h19m 20h53m 1h22m 6h16m 0.73
2019-10-08 6h17m 6h51m 20h17m 20h51m 2h21m 6h17m 0.81
2019-10-09 6h18m 6h52m 20h15m 20h49m 3h21m 6h18m 0.88
2019-10-10 6h20m 6h53m 20h13m 20h47m 4h22m 6h20m 0.93
2019-10-11 6h21m 6h55m 20h12m 20h45m 5h23m 6h21m 0.93
2019-10-12 6h22m 6h56m 20h10m 20h44m 0.97
2019-10-13 6h23m 6h57m 20h08m 20h42m 1
2019-10-14 6h25m 6h58m 20h06m 20h40m 1
2019-10-15 6h26m 7h00m 20h05m 20h38m 0.98
2019-10-16 6h27m 7h01m 20h03m 20h37m 20h37m 20h44m 0.94
2019-10-17 6h28m 7h02m 20h01m 20h35m 20h35m 21h18m 0.89
2019-10-18 6h29m 7h03m 20h00m 20h34m 20h34m 21h59m 0.81
2019-10-19 6h31m 7h04m 19h58m 20h32m 20h32m 22h49m 0.72
2019-10-20 6h32m 7h06m 19h57m 20h30m 20h30m 23h48m 0.62
2019-10-21 6h33m 7h07m 19h55m 20h29m 20h29m 0.5
2019-10-22 6h34m 7h08m 19h54m 20h27m 20h27m 0h55m 0.39
2019-10-23 6h36m 7h09m 19h52m 20h26m 20h26m 2h08m 0.28
2019-10-24 6h37m 7h11m 19h51m 20h24m 20h24m 3h24m 0.17
2019-10-25 6h38m 7h12m 19h49m 20h23m 20h23m 4h42m 0.09
2019-10-26 6h39m 7h13m 19h48m 20h21m 20h21m 6h00m 0.03
2019-10-27 6h40m 7h14m 19h46m 20h20m 20h20m 6h40m 0
2019-10-28 6h42m 7h15m 19h45m 20h19m 20h19m 6h42m 0
2019-10-29 6h43m 7h17m 19h43m 20h17m 20h17m 6h43m 0.04
2019-10-30 6h44m 7h18m 19h42m 20h16m 20h36m 6h44m 0.09
2019-10-31 6h45m 7h19m 19h41m 20h15m 21h22m 6h45m 0.17

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

     Date   Time   Event
Oct  1 Tu          Venus: 13.1° E
     3 Th  4:23 pm Moon-Jupiter: 2° S
     5 Sa 12:01 pm Moon South Dec.: 22.8° S
     5 Sa 12:47 pm First Quarter
     5 Sa  2:49 pm Moon Descending Node
     5 Sa  4:48 pm Moon-Saturn: 0.3° N
    10 Th  2:29 pm Moon Apogee: 405900 km
    13 Su  5:08 pm Full Moon
    19 Sa 11:59 pm Mercury Elongation: 24.6° E
    20 Su  3:28 am Moon Ascending Node
    20 Su  4:07 am Moon North Dec.: 22.9° N
    21 Mo  8:39 am Last Quarter
    21 Mo  7:12 pm Orionid Shower: ZHR = 20
    22 Tu 12:41 am Moon-Beehive: 0.7° S
    26 Sa  6:41 am Moon Perigee: 361300 km
    27 Su 10:38 pm New Moon
    28 Mo  3:17 am Uranus Opposition
    29 Tu  8:33 am Moon-Venus: 4° S
    30 We 11:22 pm Mercury-Venus: 2.5° N
    31 Th  9:22 am Moon-Jupiter: 1.4° S
Nov  1 Fr          Venus: 20.8° E

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     October, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Tue  1| 07:40a  07:23p  11:43 | 08:26p  06:37a |      Set  09:28p   14%|
     |Wed  2| 07:41a  07:21p  11:40 | 08:24p  06:38a |      Set  10:04p   23%|
     |Thu  3| 07:42a  07:20p  11:37 | 08:22p  06:39a |      Set  10:46p   33%|
     |Fri  4| 07:44a  07:18p  11:34 | 08:21p  06:41a |      Set  11:33p   43%|
     |Sat  5| 07:45a  07:16p  11:30 | 08:19p  06:42a |F Qtr Set  12:25a   53%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  6| 07:46a  07:14p  11:27 | 08:17p  06:43a |      Set  01:21a   63%|
     |Mon  7| 07:47a  07:12p  11:24 | 08:15p  06:44a |      Set  02:21a   72%|
     |Tue  8| 07:49a  07:10p  11:21 | 08:13p  06:46a |      Set  03:21a   80%|
     |Wed  9| 07:50a  07:09p  11:18 | 08:12p  06:47a |      Set  04:22a   87%|
     |Thu 10| 07:51a  07:07p  11:15 | 08:10p  06:48a |      Set  05:23a   92%|
     |Fri 11| 07:52a  07:05p  11:12 | 08:08p  06:49a |      Set  06:24a   97%|
     |Sat 12| 07:54a  07:03p  11:09 | 08:06p  06:50a |      Set  07:25a   99%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 13| 07:55a  07:02p  11:06 | 08:05p  06:52a |Full  Rise 07:25p  100%|
     |Mon 14| 07:56a  07:00p  11:03 | 08:03p  06:53a |      Rise 07:49p   99%|
     |Tue 15| 07:57a  06:58p  11:00 | 08:01p  06:54a |      Rise 08:14p   96%|
     |Wed 16| 07:59a  06:56p  10:57 | 08:00p  06:55a |      Rise 08:44p   91%|
     |Thu 17| 08:00a  06:55p  10:54 | 07:58p  06:57a |      Rise 09:18p   84%|
     |Fri 18| 08:01a  06:53p  10:51 | 07:56p  06:58a |      Rise 09:59p   76%|
     |Sat 19| 08:03a  06:51p  10:48 | 07:55p  06:59a |      Rise 10:49p   66%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 20| 08:04a  06:50p  10:45 | 07:53p  07:00a |      Rise 11:48p   56%|
     |Mon 21| 08:05a  06:48p  10:42 | 07:52p  07:02a |L Qtr Rise 12:55a   45%|
     |Tue 22| 08:07a  06:46p  10:39 | 07:50p  07:03a |      Rise 02:08a   34%|
     |Wed 23| 08:08a  06:45p  10:36 | 07:49p  07:04a |      Rise 03:24a   23%|
     |Thu 24| 08:09a  06:43p  10:33 | 07:47p  07:05a |      Rise 04:41a   14%|
     |Fri 25| 08:11a  06:42p  10:31 | 07:46p  07:06a |      Rise 06:00a    7%|
     |Sat 26| 08:12a  06:40p  10:28 | 07:44p  07:08a |      Rise 07:18a    2%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 27| 08:13a  06:39p  10:25 | 07:43p  07:09a |New   Set  06:51p    0%|
     |Mon 28| 08:15a  06:37p  10:22 | 07:41p  07:10a |      Set  07:22p    1%|
     |Tue 29| 08:16a  06:36p  10:19 | 07:40p  07:11a |      Set  07:57p    5%|
     |Wed 30| 08:17a  06:34p  10:16 | 07:39p  07:13a |      Set  08:36p   11%|
     |Thu 31| 08:19a  06:33p  10:14 | 07:37p  07:14a |      Set  09:22p   18%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

 

 

 

 

09/02/2019 – Ephemeris – Previewing September Skies

September 2, 2019 Comments off

Ephemeris for Labor Day, Monday, September 2nd. Today the Sun will be up for 13 hours and 11 minutes, setting at 8:18, and it will rise tomorrow at 7:07. The Moon, half way from new to first quarter, will set at 10:29 this evening.

Let’s look at to the skies of September which started yesterday. The Sun will moving at its greatest speed in its retreat to the south. Daylight hours in the Interlochen/Traverse City area will drop from 13 hours and 11 minutes today to 11 hours 46 minutes on the 30th. The altitude of the Sun above the southern horizon at local noon will be 53 degrees today, and will descend to 42 degrees on the 30th. The Straits area will see the Sun a degree lower. The season of summer is getting short, so enjoy it while you can. Summer ends and autumn begins at 3:49 a.m. on September 23rd. Mars is in conjunction with the Sun today and Mercury will be in conjunction with the Sun tomorrow.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

September Evening Star Chart

September Evening Star Chart

Star Chart for September 2019 (10 p.m. EDT September 15, 2019). Click on image to  enlarge.Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 10 p.m. EDT in the evening and 5 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

September Morning Star Chart

September Morning Star Chart

Star Chart for September mornings 2019 (6 a.m. EDT September 15, 2019). Click on image to enlarge. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Leaky dipper drips on Leo.
  • Follow the arc of the handle of the Big Dipper to the star Arcturus.
  • The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

EDT
Traverse City Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-09-01 5h25m 6h04m 21h29m 22h08m 22h08m 5h25m 0.08
2019-09-02 5h27m 6h05m 21h27m 22h05m 22h29m 5h27m 0.17
2019-09-03 5h28m 6h06m 21h25m 22h03m 23h00m 5h28m 0.27
2019-09-04 5h30m 6h08m 21h23m 22h01m 23h33m 5h30m 0.37
2019-09-05 5h31m 6h09m 21h21m 21h59m 5h31m 0.48
2019-09-06 5h33m 6h10m 21h19m 21h56m 0h10m 5h33m 0.59
2019-09-07 5h35m 6h12m 21h17m 21h54m 0h52m 5h35m 0.69
2019-09-08 5h36m 6h13m 21h15m 21h52m 1h40m 5h36m 0.78
2019-09-09 5h38m 6h14m 21h13m 21h50m 2h32m 5h38m 0.86
2019-09-10 5h39m 6h16m 21h11m 21h48m 3h29m 5h39m 0.92
2019-09-11 5h41m 6h17m 21h09m 21h45m 4h29m 5h41m 0.92
2019-09-12 5h42m 6h18m 21h07m 21h43m 5h30m 5h42m 0.96
2019-09-13 5h43m 6h20m 21h05m 21h41m 0.99
2019-09-14 5h45m 6h21m 21h03m 21h39m 1
2019-09-15 5h46m 6h22m 21h01m 21h37m 0.99
2019-09-16 5h48m 6h23m 20h59m 21h35m 0.96
2019-09-17 5h49m 6h25m 20h57m 21h33m 21h33m 21h45m 0.91
2019-09-18 5h51m 6h26m 20h55m 21h30m 21h30m 22h11m 0.85
2019-09-19 5h52m 6h27m 20h53m 21h28m 21h28m 22h42m 0.77
2019-09-20 5h53m 6h29m 20h51m 21h26m 21h26m 23h19m 0.67
2019-09-21 5h55m 6h30m 20h49m 21h24m 21h24m 0.57
2019-09-22 5h56m 6h31m 20h47m 21h22m 21h22m 0h03m 0.46
2019-09-23 5h57m 6h32m 20h45m 21h20m 21h20m 0h57m 0.35
2019-09-24 5h59m 6h34m 20h43m 21h18m 21h18m 2h01m 0.24
2019-09-25 6h00m 6h35m 20h41m 21h16m 21h16m 3h12m 0.14
2019-09-26 6h01m 6h36m 20h39m 21h14m 21h14m 4h30m 0.07
2019-09-27 6h03m 6h37m 20h37m 21h12m 21h12m 5h49m 0.02
2019-09-28 6h04m 6h39m 20h35m 21h10m 21h10m 6h04m 0
2019-09-29 6h05m 6h40m 20h33m 21h08m 21h08m 6h05m 0.01
2019-09-30 6h07m 6h41m 20h32m 21h06m 21h06m 6h07m 0.06

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

     Date   Time    Event
Sep  1 Su           Venus: 5.2° E
     2 Mo  6:18 am  Mars Conjunction
     3 Tu  9:26 pm  Mercury Superior Conj.
     5 Th 11:10 pm  First Quarter
     6 Fr  2:52 am  Moon-Jupiter: 2.4° S
     8 Su  5:39 am  Moon South Dec.: 22.5° S
     8 Su  9:53 am  Moon-Saturn: 0°
     8 Su  1:35 pm  Moon Descending Node
    10 Tu  2:18 am  Neptune Opposition
    13 Fr  9:32 am  Moon Apogee: 406400 km
    14 Sa 12:33 am  Full Moon
    20 Fr 12:14 pm  Moon-Aldebaran: 2.8° S
    21 Sa 10:41 pm  Last Quarter
    22 Su  9:54 pm  Moon North Dec.: 22.7° N
    23 Mo  2:30 am  Moon Ascending Node
    23 Mo  3:49 am  Autumnal Equinox
    24 Tu  5:15 pm  Moon-Beehive: 0.4° S
    27 Fr 10:27 pm  Moon Perigee: 357800 km
    28 Sa  2:26 pm  New Moon
    29 Su 12:13 am  Mercury-Spica: 1.3° N
Oct  1 Tu           Venus: 13.1° E

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

 LU                  Ephemeris of Sky Events for Interlochen/TC
 September, 2019    Local time zone: EDT
 +-----------------------------------------------------------------------+
 | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
 |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
 +=======================================================================+
 |Sun  1| 07:04a  08:19p  13:14 | 09:26p  05:58a |      Set  10:00p   10%|
 |Mon  2| 07:06a  08:18p  13:11 | 09:24p  05:59a |      Set  10:29p   18%|
 |Tue  3| 07:07a  08:16p  13:08 | 09:22p  06:01a |      Set  10:59p   28%|
 |Wed  4| 07:08a  08:14p  13:05 | 09:20p  06:02a |      Set  11:32p   38%|
 |Thu  5| 07:09a  08:12p  13:02 | 09:18p  06:03a |F Qtr Set  12:09a   49%|
 |Fri  6| 07:10a  08:10p  12:59 | 09:15p  06:05a |      Set  12:52a   59%|
 |Sat  7| 07:11a  08:08p  12:56 | 09:13p  06:06a |      Set  01:39a   69%|
 +------+-----------------------+----------------+-----------------------+
 |Sun  8| 07:13a  08:07p  12:53 | 09:11p  06:07a |      Set  02:32a   77%|
 |Mon  9| 07:14a  08:05p  12:50 | 09:09p  06:09a |      Set  03:29a   85%|
 |Tue 10| 07:15a  08:03p  12:47 | 09:07p  06:10a |      Set  04:29a   91%|
 |Wed 11| 07:16a  08:01p  12:44 | 09:05p  06:11a |      Set  05:29a   96%|
 |Thu 12| 07:17a  07:59p  12:41 | 09:03p  06:13a |      Set  06:30a   99%|
 |Fri 13| 07:19a  07:57p  12:38 | 09:01p  06:14a |      Set  07:31a  100%|
 |Sat 14| 07:20a  07:55p  12:35 | 08:59p  06:15a |Full  Rise 08:36p   99%|
 +------+-----------------------+----------------+-----------------------+
 |Sun 15| 07:21a  07:53p  12:32 | 08:57p  06:17a |      Rise 08:58p   97%|
 |Mon 16| 07:22a  07:51p  12:29 | 08:55p  06:18a |      Rise 09:21p   93%|
 |Tue 17| 07:23a  07:50p  12:26 | 08:53p  06:19a |      Rise 09:45p   87%|
 |Wed 18| 07:24a  07:48p  12:23 | 08:51p  06:21a |      Rise 10:11p   80%|
 |Thu 19| 07:26a  07:46p  12:20 | 08:49p  06:22a |      Rise 10:42p   71%|
 |Fri 20| 07:27a  07:44p  12:17 | 08:47p  06:23a |      Rise 11:19p   62%|
 |Sat 21| 07:28a  07:42p  12:14 | 08:45p  06:24a |L Qtr Rise 12:03a   51%|
 +------+-----------------------+----------------+-----------------------+
 |Sun 22| 07:29a  07:40p  12:10 | 08:43p  06:26a |      Rise 12:57a   40%|
 |Mon 23| 07:30a  07:38p  12:07 | 08:41p  06:27a |      Rise 02:01a   30%|
 |Tue 24| 07:32a  07:36p  12:04 | 08:40p  06:28a |      Rise 03:13a   20%|
 |Wed 25| 07:33a  07:34p  12:01 | 08:38p  06:29a |      Rise 04:30a   11%|
 |Thu 26| 07:34a  07:33p  11:58 | 08:36p  06:31a |      Rise 05:49a    5%|
 |Fri 27| 07:35a  07:31p  11:55 | 08:34p  06:32a |      Rise 07:09a    1%|
 |Sat 28| 07:36a  07:29p  11:52 | 08:32p  06:33a |New   Set  07:56p    0%|
 +------+-----------------------+----------------+-----------------------+
 |Sun 29| 07:38a  07:27p  11:49 | 08:30p  06:34a |      Set  08:25p    2%|
 |Mon 30| 07:39a  07:25p  11:46 | 08:28p  06:36a |      Set  08:55p    7%|
 +-----------------------------------------------------------------------+
 * Nautical Twilight
 ** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

 

 

08/01/2019 – Ephemeris – Previewing August skies

August 1, 2019 Comments off

Ephemeris for Thursday, August 1st. Today the Sun will be up for 14 hours and 40 minutes, setting at 9:08, and it will rise tomorrow at 6:29. The Moon, 1 day past new, will set at 9:54 this evening.

Let’s look ahead at the month of August. Daylight hours will decrease from 14 hours and 40 minutes today to 13 hours 17 minutes on the 31st. The altitude of the Sun at local noon, that is degrees of angle above the horizon will decrease from 63 degrees today to just over 53 degrees on the 31st. Straits area listeners can subtract one degree from those angles. Local noon, when the Sun is due south, is about 1:43 p.m. The Perseid meteor shower will reach its peak during the morning hours of the 13th, by then the Moon will be nearly full. On the nights between now and then when the moon has set these meteor numbers will be building to the peak. Jupiter and Saturn will be our easily visible evening planets.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

August Evening Star Chart

August Evening Star Chart

Star Chart for August 2019 (10 p.m. EDT August 15, 2019). Click on image to enlarge.Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 10 p.m. EDT in the evening and 5 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th.

August Morning Star Chart

August morning star chart

Star Chart for August mornings 2019 (5 a.m. EDT August 15, 2019). Click on image to enlarge. Created using my LookingUp program.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Leaky dipper drips on Leo.
  • Follow the arc of the handle of the Big Dipper to the star Arcturus, and
  • Extend like a spike to Spica.
  • The Summer Triangle is in red.
  • PerR is the radiant of the Perseid meteor shower (Peaks on the 13th)

Twilight Limits, Nautical and Astronomical

EDT
Traverse
City
Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-08-01 4h30m 5h18m 22h27m 23h16m 23h16m 4h30m 0.01
2019-08-02 4h31m 5h20m 22h26m 23h14m 23h14m 4h31m 0.04
2019-08-03 4h33m 5h21m 22h24m 23h12m 23h12m 4h33m 0.11
2019-08-04 4h35m 5h23m 22h22m 23h10m 23h33m 4h35m 0.2
2019-08-05 4h37m 5h24m 22h21m 23h07m 4h37m 0.3
2019-08-06 4h39m 5h26m 22h19m 23h05m 0h01m 4h39m 0.42
2019-08-07 4h41m 5h27m 22h17m 23h03m 0h30m 4h41m 0.53
2019-08-08 4h43m 5h29m 22h15m 23h01m 1h00m 4h43m 0.64
2019-08-09 4h45m 5h30m 22h14m 22h59m 1h33m 4h45m 0.74
2019-08-10 4h47m 5h32m 22h12m 22h57m 2h11m 4h47m 0.83
2019-08-11 4h49m 5h33m 22h10m 22h54m 2h54m 4h49m 0.9
2019-08-12 4h51m 5h35m 22h08m 22h52m 3h44m 4h51m 0.9
2019-08-13 4h52m 5h36m 22h06m 22h50m 4h38m 4h52m 0.95
2019-08-14 4h54m 5h38m 22h04m 22h48m 0.98
2019-08-15 4h56m 5h39m 22h03m 22h46m 1
2019-08-16 4h58m 5h41m 22h01m 22h43m 0.99
2019-08-17 5h00m 5h42m 21h59m 22h41m 0.97
2019-08-18 5h01m 5h43m 21h57m 22h39m 0.93
2019-08-19 5h03m 5h45m 21h55m 22h37m 22h37m 22h53m 0.87
2019-08-20 5h05m 5h46m 21h53m 22h34m 22h34m 23h16m 0.8
2019-08-21 5h07m 5h48m 21h51m 22h32m 22h32m 23h41m 0.72
2019-08-22 5h08m 5h49m 21h49m 22h30m 22h30m 0.62
2019-08-23 5h10m 5h51m 21h47m 22h28m 22h28m 0h10m 0.52
2019-08-24 5h12m 5h52m 21h45m 22h25m 22h25m 0h43m 0.41
2019-08-25 5h14m 5h54m 21h43m 22h23m 22h23m 1h23m 0.3
2019-08-26 5h15m 5h55m 21h41m 22h21m 22h21m 2h13m 0.2
2019-08-27 5h17m 5h56m 21h39m 22h19m 22h19m 3h13m 0.11
2019-08-28 5h19m 5h58m 21h37m 22h16m 22h16m 4h23m 0.05
2019-08-29 5h20m 5h59m 21h35m 22h14m 22h14m 5h20m 0.01
2019-08-30 5h22m 6h01m 21h33m 22h12m 22h12m 5h22m 0
2019-08-31 5h24m 6h02m 21h31m 22h10m 22h10m 5h24m 0.03

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Aug	1	Th			Venus: 3.6° W
 	2	Fr	 3:08 am	Moon Perigee: 359400 km
 	7	We	 1:31 pm	First Quarter
 	9	Fr	 6:53 pm	Moon-Jupiter: 2.6° S
 	9	Fr	 6:59 pm	Mercury Elongation: 19° W
 	12	Mo	12:28 am	Moon South Dec.: 22.4° S
 	12	Mo	 6:05 am	Moon-Saturn: 0°
 	12	Mo	10:45 am	Moon Descending Node
 	12	Mo	12:29 pm	Jupiter-Antares: 6.9° N
 	13	Tu	 2:53 am	Perseid Shower: ZHR = 90
 	14	We	 1:44 am	Venus Superior Conj.
 	15	Th	 8:29 am	Full Moon
 	17	Sa	12:24 am	Mercury-Beehive: 1.2° S
 	17	Sa	 6:50 am	Moon Apogee: 406200 km
 	23	Fr	10:56 am	Last Quarter
 	24	Sa	 5:24 am	Moon-Aldebaran: 2.5° S
 	26	Mo	 1:53 pm	Moon North Dec.: 22.5° N
 	26	Mo	 9:50 pm	Moon Ascending Node
 	28	We	 7:31 am	Moon-Beehive: 0.2° S
 	30	Fr	 6:37 am	New Moon
 	30	Fr	11:57 am	Moon Perigee: 357200 km
Sep	1	Su				Venus: 5.2° E

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     August, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Thu  1| 06:28a  09:08p  14:40 | 10:24p  05:12a |      Set  09:54p    1%|
     |Fri  2| 06:29a  09:07p  14:37 | 10:22p  05:14a |      Set  10:31p    5%|
     |Sat  3| 06:31a  09:06p  14:35 | 10:20p  05:15a |      Set  11:03p   12%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  4| 06:32a  09:04p  14:32 | 10:19p  05:17a |      Set  11:33p   21%|
     |Mon  5| 06:33a  09:03p  14:30 | 10:17p  05:18a |      Set  12:01a   31%|
     |Tue  6| 06:34a  09:02p  14:27 | 10:15p  05:20a |      Set  12:29a   42%|
     |Wed  7| 06:35a  09:00p  14:25 | 10:14p  05:21a |F Qtr Set  01:00a   53%|
     |Thu  8| 06:36a  08:59p  14:22 | 10:12p  05:23a |      Set  01:33a   64%|
     |Fri  9| 06:37a  08:57p  14:20 | 10:10p  05:24a |      Set  02:11a   73%|
     |Sat 10| 06:39a  08:56p  14:17 | 10:08p  05:26a |      Set  02:54a   82%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 11| 06:40a  08:55p  14:14 | 10:06p  05:27a |      Set  03:44a   89%|
     |Mon 12| 06:41a  08:53p  14:12 | 10:05p  05:29a |      Set  04:38a   94%|
     |Tue 13| 06:42a  08:51p  14:09 | 10:03p  05:30a |      Set  05:36a   98%|
     |Wed 14| 06:43a  08:50p  14:06 | 10:01p  05:32a |      Set  06:36a  100%|
     |Thu 15| 06:44a  08:48p  14:03 | 09:59p  05:33a |Full  Rise 09:17p  100%|
     |Fri 16| 06:46a  08:47p  14:01 | 09:57p  05:35a |      Rise 09:44p   98%|
     |Sat 17| 06:47a  08:45p  13:58 | 09:55p  05:36a |      Rise 10:08p   94%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 18| 06:48a  08:44p  13:55 | 09:53p  05:38a |      Rise 10:31p   89%|
     |Mon 19| 06:49a  08:42p  13:52 | 09:51p  05:39a |      Rise 10:53p   83%|
     |Tue 20| 06:50a  08:40p  13:49 | 09:49p  05:41a |      Rise 11:16p   75%|
     |Wed 21| 06:51a  08:39p  13:47 | 09:47p  05:42a |      Rise 11:41p   66%|
     |Thu 22| 06:53a  08:37p  13:44 | 09:46p  05:44a |      Rise 12:10a   56%|
     |Fri 23| 06:54a  08:35p  13:41 | 09:44p  05:45a |L Qtr Rise 12:43a   46%|
     |Sat 24| 06:55a  08:34p  13:38 | 09:42p  05:47a |      Rise 01:24a   36%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 25| 06:56a  08:32p  13:35 | 09:40p  05:48a |      Rise 02:13a   26%|
     |Mon 26| 06:57a  08:30p  13:32 | 09:38p  05:50a |      Rise 03:13a   16%|
     |Tue 27| 06:59a  08:28p  13:29 | 09:36p  05:51a |      Rise 04:23a    9%|
     |Wed 28| 07:00a  08:27p  13:26 | 09:34p  05:52a |      Rise 05:40a    3%|
     |Thu 29| 07:01a  08:25p  13:23 | 09:32p  05:54a |      Rise 07:00a    0%|
     |Fri 30| 07:02a  08:23p  13:20 | 09:30p  05:55a |New   Set  08:59p    1%|
     |Sat 31| 07:03a  08:21p  13:17 | 09:28p  05:57a |      Set  09:31p    4%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

Generated using my LookingUp for DOS program.

07/01/2019 – Ephemeris – Previewing July skies

July 1, 2019 Comments off

Ephemeris for Monday, July 1st. Today the Sun will be up for 15 hours and 31 minutes, setting at 9:32, and it will rise tomorrow at 6:01. The Moon, 1 day before new, will rise at 5:49 tomorrow morning.

Lets preview July’s skies. The Sun, having reached its northern solstice, is beginning to slide southward again, at first imperceptibly, then with greater speed. The daylight hours will decrease from 15 hours and 31 minutes today to 14 hours 42 minutes at month’s end. The daylight hours will be slightly shorter south of Interlochen, and slightly longer to the north. The altitude of the Sun at local noon, when it is due south will decrease from 68 degrees now to 63 degrees at month’s end. The Sun will be a degree lower in the Straits area. Despite the warmth, the Earth will reach its greatest distance from the Sun this Friday the 5th. On that day the Earth will reach 94.5 million miles (152.1 million km) from the Sun.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

July Evening Star Chart

July Evening Star Chart

Star Chart for July 2019 (11 p.m. EDT July 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4:30 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th.

July Morning Star Chart

July 2019 morning star chart

Star Chart for July mornings 2019 (4:30 a.m. EDT July 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Leaky dipper drips on Leo.
  • Follow the arc of the handle of the Big Dipper to the star Arcturus, and
  • Extend like a spike to Spica.
  • The Summer Triangle is in red.
  • DAqR is the radiant of the South Delta Aquariid meteor shower (Peaks on the 30th)

Twilight Limits, Nautical and Astronomical

EDT
Traverse
City
Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-07-01 3h37m 4h40m 23h00m 0h03m 0h03m 3h37m 0.02
2019-07-02 3h38m 4h41m 23h00m 0h02m 0h02m 3h38m 0
2019-07-03 3h40m 4h42m 22h59m 0h02m 0h02m 3h40m 0.01
2019-07-04 3h41m 4h43m 22h59m 0h01m 0h01m 3h41m 0.06
2019-07-05 3h42m 4h44m 22h58m 0h00m 0h00m 3h42m 0.13
2019-07-06 3h43m 4h45m 22h58m 23h59m 3h43m 0.22
2019-07-07 3h45m 4h46m 22h57m 23h58m 0h34m 3h45m 0.33
2019-07-08 3h46m 4h47m 22h56m 23h57m 1h03m 3h46m 0.45
2019-07-09 3h48m 4h48m 22h56m 23h55m 1h31m 3h48m 0.56
2019-07-10 3h49m 4h49m 22h55m 23h54m 1h58m 3h49m 0.67
2019-07-11 3h51m 4h50m 22h54m 23h53m 2h26m 3h51m 0.77
2019-07-12 3h52m 4h51m 22h53m 23h52m 2h57m 3h52m 0.86
2019-07-13 3h54m 4h52m 22h52m 23h50m 3h32m 3h54m 0.92
2019-07-14 3h56m 4h53m 22h51m 23h49m 0.92
2019-07-15 3h58m 4h54m 22h50m 23h47m 0.97
2019-07-16 3h59m 4h56m 22h49m 23h46m 1
2019-07-17 4h01m 4h57m 22h48m 23h44m 1
2019-07-18 4h03m 4h58m 22h47m 23h42m 0.98
2019-07-19 4h05m 5h00m 22h46m 23h41m 0.95
2019-07-20 4h07m 5h01m 22h44m 23h39m 23h39m 23h40m 0.89
2019-07-21 4h08m 5h02m 22h43m 23h37m 23h37m 0.83
2019-07-22 4h10m 5h04m 22h42m 23h35m 23h35m 0h04m 0.75
2019-07-23 4h12m 5h05m 22h41m 23h33m 23h33m 0h27m 0.66
2019-07-24 4h14m 5h06m 22h39m 23h32m 23h32m 0h50m 0.56
2019-07-25 4h16m 5h08m 22h38m 23h30m 23h30m 1h14m 0.46
2019-07-26 4h18m 5h09m 22h36m 23h28m 23h28m 1h40m 0.36
2019-07-27 4h20m 5h11m 22h35m 23h26m 23h26m 2h11m 0.26
2019-07-28 4h22m 5h12m 22h33m 23h24m 23h24m 2h48m 0.16
2019-07-29 4h24m 5h14m 22h32m 23h22m 23h22m 3h34m 0.09
2019-07-30 4h26m 5h15m 22h30m 23h20m 23h20m 4h26m 0.03
2019-07-31 4h28m 5h17m 22h29m 23h18m 23h18m 4h28m 0

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Jul	1	Mo		        Venus: 12° W
 	2	Tu	 3:16 pm	New Moon
 	2	Tu	 3:23 pm	Total Solar Eclipse
                                        S Pacific, Chile, Argentina
 	2	Tu	 6:02 pm	Moon North Dec.: 22.4° N
 	3	We	 2:53 am	Moon Ascending Node
 	4	Th	 4:34 am	Moon-Mercury: 3.3° S
 	4	Th	 8:53 am	Mercury-Beehive: 4.6° S
 	4	Th	11:02 am	Moon-Beehive: 0.2° S
 	4	Th	 2:59 pm	Aphelion: 1.0168 AU
 	5	Fr	12:54 am	Moon Perigee: 363700 km
 	5	Fr	 7:18 pm	Mercury-Mars: 3.8° N
 	9	Tu	 6:55 am	First Quarter
 	9	Tu	12:12 pm	Saturn Opposition
 	13	Sa	 3:06 am	Mars-Beehive: 0.4° S
 	13	Sa	 3:43 pm	Moon-Jupiter: 2.5° S
 	15	Mo	 6:49 pm	Moon South Dec.: 22.4° S
 	16	Tu	 3:27 am	Moon-Saturn: 0.2° N
 	16	Tu	 5:05 am	Moon Descending Node
 	16	Tu	 5:31 pm	Partial Lunar Eclipse
                                        S America, most of E Hemisphere
 	16	Tu	 5:38 pm	Full Moon
 	20	Sa	 8:01 pm	Moon Apogee: 405500 km
 	21	Su	 8:32 am	Mercury Inferior Conj.
 	24	We	 9:18 pm	Last Quarter
 	27	Sa	 8:47 pm	Moon-Aldebaran: 2.4° S
 	28	Su	10:59 am	Delta Aquarid Shower: ZHR = 20
                                        Intl. Meteor Org. has the peak on the 30th.
 	30	Tu	 4:10 am	Moon North Dec.: 22.4° N
 	30	Tu	 1:02 pm	Moon Ascending Node
 	31	We	11:12 pm	New Moon
Aug	1	Th		        Venus: 3.6° W

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     July, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Mon  1| 06:00a  09:32p  15:31 | 10:57p  04:35a |      Rise 05:49a    1%|
     |Tue  2| 06:01a  09:31p  15:30 | 10:57p  04:36a |New   Set  09:37p    0%|
     |Wed  3| 06:02a  09:31p  15:29 | 10:56p  04:36a |      Set  10:33p    2%|
     |Thu  4| 06:02a  09:31p  15:28 | 10:56p  04:37a |      Set  11:20p    7%|
     |Fri  5| 06:03a  09:31p  15:27 | 10:55p  04:38a |      Set  11:59p   14%|
     |Sat  6| 06:04a  09:30p  15:26 | 10:55p  04:39a |      Set  12:33a   23%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  7| 06:04a  09:30p  15:25 | 10:54p  04:40a |      Set  01:03a   34%|
     |Mon  8| 06:05a  09:29p  15:24 | 10:53p  04:41a |      Set  01:31a   45%|
     |Tue  9| 06:06a  09:29p  15:23 | 10:52p  04:42a |F Qtr Set  01:58a   56%|
     |Wed 10| 06:07a  09:28p  15:21 | 10:52p  04:43a |      Set  02:26a   67%|
     |Thu 11| 06:07a  09:28p  15:20 | 10:51p  04:44a |      Set  02:57a   77%|
     |Fri 12| 06:08a  09:27p  15:19 | 10:50p  04:45a |      Set  03:32a   85%|
     |Sat 13| 06:09a  09:27p  15:17 | 10:49p  04:46a |      Set  04:11a   92%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 14| 06:10a  09:26p  15:16 | 10:48p  04:48a |      Set  04:57a   96%|
     |Mon 15| 06:11a  09:25p  15:14 | 10:47p  04:49a |      Set  05:48a   99%|
     |Tue 16| 06:12a  09:25p  15:12 | 10:46p  04:50a |Full  Rise 09:30p  100%|
     |Wed 17| 06:13a  09:24p  15:11 | 10:45p  04:51a |      Rise 10:10p   99%|
     |Thu 18| 06:14a  09:23p  15:09 | 10:44p  04:53a |      Rise 10:45p   96%|
     |Fri 19| 06:15a  09:22p  15:07 | 10:42p  04:54a |      Rise 11:14p   91%|
     |Sat 20| 06:16a  09:21p  15:05 | 10:41p  04:55a |      Rise 11:40p   85%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 21| 06:17a  09:20p  15:03 | 10:40p  04:57a |      Rise 12:04a   78%|
     |Mon 22| 06:18a  09:19p  15:01 | 10:39p  04:58a |      Rise 12:27a   69%|
     |Tue 23| 06:19a  09:18p  14:59 | 10:37p  04:59a |      Rise 12:50a   60%|
     |Wed 24| 06:20a  09:17p  14:57 | 10:36p  05:01a |L Qtr Rise 01:14a   51%|
     |Thu 25| 06:21a  09:16p  14:55 | 10:34p  05:02a |      Rise 01:40a   41%|
     |Fri 26| 06:22a  09:15p  14:53 | 10:33p  05:04a |      Rise 02:11a   31%|
     |Sat 27| 06:23a  09:14p  14:51 | 10:32p  05:05a |      Rise 02:48a   21%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 28| 06:24a  09:13p  14:49 | 10:30p  05:07a |      Rise 03:34a   13%|
     |Mon 29| 06:25a  09:12p  14:47 | 10:29p  05:08a |      Rise 04:30a    6%|
     |Tue 30| 06:26a  09:11p  14:44 | 10:27p  05:09a |      Rise 05:37a    2%|
     |Wed 31| 06:27a  09:10p  14:42 | 10:25p  05:11a |New   Set  09:10p    0%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

 

 

05/31/2019 – Ephemeris – Previewing June skies

May 31, 2019 Comments off

Ephemeris for Friday, May 31st. Today the Sun will be up for 15 hours and 19 minutes, setting at 9:20, and it will rise tomorrow at 6:00. The Moon, 3 days before new, will rise at 5:13 tomorrow morning.

Let’s preview the skies of June. There’ will be a lot of Sun in June and very little night. The daylight hours will increase a bit from 15 hours and 20 minutes tomorrow to 15 hours and 34 minutes on the 21st, retreating back to 15 hours 31 minutes at month’s end. At this time of the year the sunset times for Ludington, Interlochen, Petoskey and Mackinaw City are very nearly the same. However the sunrise times are at their most divergent. With Ludington’s sunrise being 14 minutes later than Mackinaw City’s. The altitude of the sun above the southern horizon at local noon around 1:43 p.m. will hover around 68 to 69 degrees. Summer will start on the 21st at 11:54 a.m. The planet Mercury will grace our evening skies this month.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

June Evening Star Chart

June Evening Star Chart

Star Chart for June 2019 (11 p.m. EDT June 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 4 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times of 10 p.m. and 5 a.m. are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog.

June Morning Star Chart

June 2019 morning star chart

Star Chart for June mornings 2019 (4 a.m. EDT June 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Leaky dipper drips on Leo.
  • Follow the arc of the handle of the Big Dipper to the star Arcturus, and
  • Extend like a spike to Spica.
  • The Summer Triangle is in red.

Twilight Limits, Nautical and Astronomical

EDT
Traverse
City
Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-06-01 3h43m 4h42m 22h46m 23h45m 23h45m 3h43m 0.04
2019-06-02 3h42m 4h41m 22h47m 23h47m 23h47m 3h42m 0.01
2019-06-03 3h41m 4h40m 22h49m 23h48m 23h48m 3h41m 0
2019-06-04 3h39m 4h40m 22h50m 23h50m 23h50m 3h39m 0.02
2019-06-05 3h38m 4h39m 22h51m 23h51m 23h51m 3h38m 0.07
2019-06-06 3h37m 4h38m 22h52m 23h53m 3h37m 0.15
2019-06-07 3h36m 4h38m 22h53m 23h54m 0h41m 3h36m 0.24
2019-06-08 3h35m 4h37m 22h53m 23h55m 1h23m 3h35m 0.35
2019-06-09 3h34m 4h37m 22h54m 23h57m 1h59m 3h34m 0.47
2019-06-10 3h34m 4h36m 22h55m 23h58m 2h31m 3h34m 0.59
2019-06-11 3h33m 4h36m 22h56m 23h59m 2h59m 3h33m 0.7
2019-06-12 3h32m 4h36m 22h57m 0h00m 3h26m 3h32m 0.8
2019-06-13 3h32m 4h36m 22h57m 0h01m 0.88
2019-06-14 3h32m 4h35m 22h58m 0h02m 0.95
2019-06-15 3h31m 4h35m 22h58m 0h02m 0.95
2019-06-16 3h31m 4h35m 22h59m 0h03m 0.98
2019-06-17 3h31m 4h35m 22h59m 0h04m 1
2019-06-18 3h31m 4h35m 23h00m 0h04m 0.99
2019-06-19 3h31m 4h35m 23h00m 0h05m 0.96
2019-06-20 3h31m 4h35m 23h00m 0h05m 0.91
2019-06-21 3h31m 4h36m 23h01m 0h05m 0h05m 0h12m 0.85
2019-06-22 3h31m 4h36m 23h01m 0h05m 0h05m 0h44m 0.77
2019-06-23 3h32m 4h36m 23h01m 0h06m 0h06m 1h12m 0.68
2019-06-24 3h32m 4h36m 23h01m 0h06m 0h06m 1h37m 0.59
2019-06-25 3h32m 4h37m 23h01m 0h05m 0h05m 2h01m 0.49
2019-06-26 3h33m 4h37m 23h01m 0h05m 0h05m 2h23m 0.39
2019-06-27 3h34m 4h38m 23h01m 0h05m 0h05m 2h47m 0.3
2019-06-28 3h35m 4h38m 23h01m 0h05m 0h05m 3h13m 0.21
2019-06-29 3h35m 4h39m 23h01m 0h04m 0h04m 3h35m 0.12
2019-06-30 3h36m 4h40m 23h00m 0h04m 0h04m 3h36m 0.06

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

Date       Time    Event
Jun  1 Sa          Venus: 20° W
     1 Sa  2:15 pm Moon-Venus: 3.4° N
     3 Mo  6:02 am New Moon
     5 We  8:58 am Moon North Dec.: 22.4° N
     5 We 11:05 am Moon-Mars: 1.6° N
     5 We  6:46 pm Moon Ascending Node
     7 Fr  3:19 am Moon-Beehive: 0.2° S
     7 Fr  7:21 pm Moon Perigee: 368500 km
     8 Sa  9:54 pm Venus-Pleiades: 5.1° S
    10 Mo  1:59 am First Quarter
    10 Mo 11:11 am Jupiter Opposition
    16 Su  2:50 pm Moon-Jupiter: 2.1° S
    16 Su  7:09 pm Venus-Aldebaran: 4.7° N
    17 Mo  4:31 am Full Moon
    18 Tu 11:33 am Moon South Dec.: 22.4° S
    18 Tu  1:41 pm Mercury-Mars: 0.2° N
    18 Tu  9:49 pm Moon Descending Node
    18 Tu 11:58 pm Moon-Saturn: 0.5° N
    19 We  9:06 am Mercury-Pollux: 5.4° S
    21 Fr  3:56 am Mars-Pollux: 5.5° S
    21 Fr 11:54 am Summer Solstice
    23 Su  3:50 am Moon Apogee: 404500 km
    23 Su  6:59 pm Mercury Greatest Elongation: 25.2° E
    25 Tu  5:46 am Last Quarter
    30 Su 11:06 am Moon-Aldebaran: 2.3° S
Jul  1 Mo          Venus: 12° W

All event times are given for UTC-4 hr: Eastern Daylight Saving Time.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     June, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Sat  1| 06:00a  09:21p  15:20 | 10:44p  04:37a |      Rise 05:45a    3%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  2| 05:59a  09:22p  15:22 | 10:45p  04:36a |      Rise 06:22a    0%|
     |Mon  3| 05:59a  09:22p  15:23 | 10:46p  04:35a |New   Set  09:45p    0%|
     |Tue  4| 05:59a  09:23p  15:24 | 10:47p  04:35a |      Set  10:51p    3%|
     |Wed  5| 05:58a  09:24p  15:25 | 10:48p  04:34a |      Set  11:49p    8%|
     |Thu  6| 05:58a  09:25p  15:26 | 10:49p  04:33a |      Set  12:40a   16%|
     |Fri  7| 05:57a  09:25p  15:27 | 10:50p  04:33a |      Set  01:23a   25%|
     |Sat  8| 05:57a  09:26p  15:28 | 10:51p  04:32a |      Set  01:59a   36%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  9| 05:57a  09:27p  15:29 | 10:52p  04:32a |      Set  02:30a   47%|
     |Mon 10| 05:57a  09:27p  15:30 | 10:53p  04:31a |F Qtr Set  02:59a   59%|
     |Tue 11| 05:56a  09:28p  15:31 | 10:53p  04:31a |      Set  03:26a   69%|
     |Wed 12| 05:56a  09:28p  15:31 | 10:54p  04:31a |      Set  03:53a   79%|
     |Thu 13| 05:56a  09:29p  15:32 | 10:55p  04:30a |      Set  04:23a   87%|
     |Fri 14| 05:56a  09:29p  15:33 | 10:55p  04:30a |      Set  04:55a   94%|
     |Sat 15| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Set  05:32a   98%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 16| 05:56a  09:30p  15:33 | 10:56p  04:30a |      Set  06:14a  100%|
     |Mon 17| 05:56a  09:30p  15:34 | 10:57p  04:30a |Full  Rise 09:56p  100%|
     |Tue 18| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Rise 10:49p   97%|
     |Wed 19| 05:56a  09:31p  15:34 | 10:57p  04:30a |      Rise 11:34p   93%|
     |Thu 20| 05:56a  09:31p  15:34 | 10:58p  04:30a |      Rise 12:12a   87%|
     |Fri 21| 05:57a  09:32p  15:34 | 10:58p  04:30a |      Rise 12:44a   80%|
     |Sat 22| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 01:12a   72%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 23| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 01:37a   63%|
     |Mon 24| 05:57a  09:32p  15:34 | 10:58p  04:31a |      Rise 02:00a   54%|
     |Tue 25| 05:58a  09:32p  15:34 | 10:58p  04:32a |L Qtr Rise 02:23a   44%|
     |Wed 26| 05:58a  09:32p  15:33 | 10:58p  04:32a |      Rise 02:47a   35%|
     |Thu 27| 05:59a  09:32p  15:33 | 10:58p  04:32a |      Rise 03:13a   26%|
     |Fri 28| 05:59a  09:32p  15:33 | 10:58p  04:33a |      Rise 03:42a   17%|
     |Sat 29| 05:59a  09:32p  15:32 | 10:58p  04:34a |      Rise 04:16a   10%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 30| 06:00a  09:32p  15:31 | 10:57p  04:34a |      Rise 04:58a    4%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset

04/30/2019 – Ephemeris – Previewing May skies

April 30, 2019 Comments off

Ephemeris for Tuesday, April 30th. Today the Sun will be up for 14 hours and 11 minutes, setting at 8:46, and it will rise tomorrow at 6:33. The Moon, half way from last quarter to new, will rise at 5:30 tomorrow morning.

Let’s look ahead at the month of May, the month when the promise of spring is finally fulfilled. Daylight hours in the Interlochen/Traverse City area will increase from 14 hours and 14 minutes Tomorrow to 15 hours 19 minutes on the 31st. The altitude, or angle, of the sun above the southern horizon at local noon will ascend from 60 degrees tomorrow to 67 degrees at month’s end. The altitude of the sun in the Straits area will be a degree lower than that. Local apparent noon this month, when the sun passes due south, will be about 1:38 p.m. Early this month we’ll have The Eta Aquariid meteor shower early in the morning. Mars is our only evening planet, falling way behind the Earth 217 million miles (349 million km) away at mid-month.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

May Evening Star Chart

May Evening Star Chart

Star Chart for May 2019 (11 p.m. EDT May 15, 2019). Created using my LookingUp program. Click on image to enlarge.

The planets and stars are plotted for the 15th at 11 p.m. EDT in the evening and 5 a.m. for the morning chart. These are the chart times. Note that Traverse City is located approximately 45 minutes behind our time meridian, West 75° longitude. (An hour 45 minutes behind our daylight saving time meridian during EDT). To duplicate the star positions on a planisphere you may have to set it to 1 hour 45 minutes earlier than the current time.

Note the chart times of 10 p.m. and 5 a.m. are for the 15th. For each week before the 15th add ½ hour (28 minutes if you’re picky). For each week after the 15th subtract ½ hour. The planet positions are updated each Wednesday on this blog. For planet positions on dates other than the 15th, check the Wednesday planet posts on this blog.

May Morning Star Chart

May Morning Star Chart

Star Chart for May mornings 2019 (5 a.m. EDT May 15, 2019). Created using my LookingUp program. Click on image to enlarge.

For a list of constellation names to go with the abbreviations click here.

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • Leaky dipper drips on Leo
  • Follow the arc of the handle of the Big Dipper to the star Arcturus, and
  • Extend like a spike to Spica,
  • The Summer Triangle is in red.
  • EaqR is the radiant of the Aquariid meteor shower that peaks on the 5th-6th.  See Ephemeris Extra Saturday the 4th.

Twilight Limits, Nautical and Astronomical

EDT
Traverse
City
Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2019-05-01 4h41m 5h25m 22h02m 22h46m 22h46m 4h41m 0.11
2019-05-02 4h39m 5h24m 22h03m 22h48m 22h48m 4h39m 0.05
2019-05-03 4h37m 5h22m 22h05m 22h50m 22h50m 4h37m 0.02
2019-05-04 4h34m 5h20m 22h06m 22h52m 22h52m 4h34m 0
2019-05-05 4h32m 5h18m 22h08m 22h54m 22h54m 4h32m 0.01
2019-05-06 4h30m 5h17m 22h09m 22h56m 22h56m 4h30m 0.04
2019-05-07 4h28m 5h15m 22h11m 22h58m 23h58m 4h28m 0.09
2019-05-08 4h26m 5h13m 22h13m 23h00m 4h26m 0.17
2019-05-09 4h24m 5h12m 22h14m 23h02m 1h00m 4h24m 0.27
2019-05-10 4h22m 5h10m 22h16m 23h04m 1h54m 4h22m 0.38
2019-05-11 4h20m 5h08m 22h17m 23h06m 2h41m 4h20m 0.5
2019-05-12 4h18m 5h07m 22h19m 23h08m 3h21m 4h18m 0.61
2019-05-13 4h16m 5h05m 22h20m 23h10m 3h55m 4h16m 0.73
2019-05-14 4h14m 5h04m 22h22m 23h12m 0.83
2019-05-15 4h12m 5h02m 22h23m 23h14m 0.91
2019-05-16 4h10m 5h01m 22h25m 23h16m 0.91
2019-05-17 4h08m 4h59m 22h26m 23h18m 0.96
2019-05-18 4h06m 4h58m 22h28m 23h20m 0.99
2019-05-19 4h04m 4h56m 22h29m 23h22m 1
2019-05-20 4h02m 4h55m 22h31m 23h23m 0.98
2019-05-21 4h00m 4h54m 22h32m 23h25m 23h25m 0.93
2019-05-22 3h59m 4h53m 22h33m 23h27m 23h27m 0h07m 0.87
2019-05-23 3h57m 4h51m 22h35m 23h29m 23h29m 0h56m 0.8
2019-05-24 3h55m 4h50m 22h36m 23h31m 23h31m 1h38m 0.71
2019-05-25 3h54m 4h49m 22h38m 23h33m 23h33m 2h13m 0.62
2019-05-26 3h52m 4h48m 22h39m 23h35m 23h35m 2h43m 0.52
2019-05-27 3h50m 4h47m 22h40m 23h37m 23h37m 3h10m 0.42
2019-05-28 3h49m 4h46m 22h42m 23h38m 23h38m 3h34m 0.33
2019-05-29 3h47m 4h45m 22h43m 23h40m 23h40m 3h47m 0.24
2019-05-30 3h46m 4h44m 22h44m 23h42m 23h42m 3h46m 0.16
2019-05-31 3h44m 4h43m 22h45m 23h44m 23h44m 3h44m 0.09

Twilight calendar was generated using Cartes du Ciel (Sky Charts).

See my blog post: Twilight Zone for the definitions of the different periods of twilight here: https://bobmoler.wordpress.com/2018/09/27/.

NASA Calendar of Planetary Events

May  1 We          Venus: 27.8° W
     2 Th  7:39 am Moon-Venus: 3.9° N
     4 Sa  6:45 pm New Moon
     5 Su  9:12 am Eta Aquariid Meteor Shower: ZHR = 60
     6 Mo  5:52 pm Moon-Aldebaran: 2.4° S
     7 Tu  7:36 pm Moon-Mars: 3.3° N
     9 Th  1:46 am Moon North Dec.: 22.2° N
     9 Th  2:50 pm Moon Ascending Node
    10 Fr  9:35 pm Moon-Beehive: 0°
    11 Sa  9:12 pm First Quarter
    13 Mo  5:53 pm Moon Perigee: 369000 km
    18 Sa  5:11 pm Full Moon
    20 Mo 12:54 pm Moon-Jupiter: 1.8° S
    21 Tu  8:59 am Mercury Superior Conj.
    22 We  2:41 am Moon South Dec.: 22.3° S
    22 We  3:12 pm Moon Descending Node
    22 We  6:25 pm Moon-Saturn: 0.6° N
    26 Su  9:27 am Moon Apogee: 404100 km
    26 Su 12:33 pm Last Quarter
Jun  1 Sa          Venus: 20° W

All event times are given for UTC-5 hr: Eastern Standard or UTC-4 hr: Daylight Saving Time starting May 10th.

Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.

If you go to the above site you can print out a list like the above for the entire year or calendar pages for your time zone.

Sun and Moon Rising and Setting Events

     LU                  Ephemeris of Sky Events for Interlochen/TC
     May, 2019    Local time zone: EDT
     +-----------------------------------------------------------------------+
     | DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
     |      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
     +=======================================================================+
     |Wed  1| 06:33a  08:47p  14:14 | 09:59p  05:21a |      Rise 05:54a    9%|
     |Thu  2| 06:31a  08:48p  14:17 | 10:01p  05:19a |      Rise 06:18a    4%|
     |Fri  3| 06:30a  08:49p  14:19 | 10:02p  05:17a |      Rise 06:44a    1%|
     |Sat  4| 06:28a  08:51p  14:22 | 10:04p  05:15a |New   Set  08:36p    0%|
     +------+-----------------------+----------------+-----------------------+
     |Sun  5| 06:27a  08:52p  14:24 | 10:06p  05:14a |      Set  09:44p    1%|
     |Mon  6| 06:26a  08:53p  14:27 | 10:07p  05:12a |      Set  10:52p    5%|
     |Tue  7| 06:24a  08:54p  14:30 | 10:09p  05:10a |      Set  11:58p   10%|
     |Wed  8| 06:23a  08:55p  14:32 | 10:10p  05:09a |      Set  12:59a   18%|
     |Thu  9| 06:22a  08:57p  14:35 | 10:12p  05:07a |      Set  01:54a   28%|
     |Fri 10| 06:20a  08:58p  14:37 | 10:13p  05:05a |      Set  02:41a   38%|
     |Sat 11| 06:19a  08:59p  14:39 | 10:15p  05:04a |F Qtr Set  03:21a   49%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 12| 06:18a  09:00p  14:42 | 10:16p  05:02a |      Set  03:55a   61%|
     |Mon 13| 06:17a  09:01p  14:44 | 10:18p  05:00a |      Set  04:26a   72%|
     |Tue 14| 06:15a  09:03p  14:47 | 10:19p  04:59a |      Set  04:54a   81%|
     |Wed 15| 06:14a  09:04p  14:49 | 10:21p  04:57a |      Set  05:22a   89%|
     |Thu 16| 06:13a  09:05p  14:51 | 10:22p  04:56a |      Set  05:51a   95%|
     |Fri 17| 06:12a  09:06p  14:53 | 10:24p  04:55a |      Set  06:22a   99%|
     |Sat 18| 06:11a  09:07p  14:55 | 10:25p  04:53a |Full  Rise 08:59p  100%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 19| 06:10a  09:08p  14:57 | 10:27p  04:52a |      Rise 10:07p   98%|
     |Mon 20| 06:09a  09:09p  15:00 | 10:28p  04:50a |      Rise 11:10p   95%|
     |Tue 21| 06:08a  09:10p  15:02 | 10:30p  04:49a |      Rise 12:07a   89%|
     |Wed 22| 06:07a  09:11p  15:03 | 10:31p  04:48a |      Rise 12:56a   83%|
     |Thu 23| 06:06a  09:12p  15:05 | 10:33p  04:47a |      Rise 01:37a   75%|
     |Fri 24| 06:06a  09:13p  15:07 | 10:34p  04:45a |      Rise 02:13a   66%|
     |Sat 25| 06:05a  09:14p  15:09 | 10:35p  04:44a |      Rise 02:43a   57%|
     +------+-----------------------+----------------+-----------------------+
     |Sun 26| 06:04a  09:15p  15:11 | 10:37p  04:43a |L Qtr Rise 03:09a   47%|
     |Mon 27| 06:03a  09:16p  15:13 | 10:38p  04:42a |      Rise 03:34a   38%|
     |Tue 28| 06:03a  09:17p  15:14 | 10:39p  04:41a |      Rise 03:57a   29%|
     |Wed 29| 06:02a  09:18p  15:16 | 10:40p  04:40a |      Rise 04:21a   20%|
     |Thu 30| 06:01a  09:19p  15:17 | 10:42p  04:39a |      Rise 04:46a   13%|
     |Fri 31| 06:01a  09:20p  15:19 | 10:43p  04:38a |      Rise 05:13a    7%|
     +-----------------------------------------------------------------------+
     * Nautical Twilight
     ** Moonrise or moonset, whichever occurs between sunrise and sunset