Home > Ephemeris Program, Month preview > 06/30/2020 – Ephemeris – Previewing the skies of July 2020

06/30/2020 – Ephemeris – Previewing the skies of July 2020

June 30, 2020

This is Ephemeris for Tuesday, June 30th. 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, 2 days past first quarter, will set at 3:15 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 30 minutes tomorrow to 14 hours 40 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 tomorrow to 63 degrees at month’s end. Despite the warmth, the Earth will reach its greatest distance from the Sun on Saturday the 4th. Both Jupiter and Saturn reach opposition from the Sun this month and officially become evening planets.

The event 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 2020 (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 Morning Star Chart

Star Chart for July mornings 2020 (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 27th)

Twilight Limits, Nautical and Astronomical

      EDT        
  Morning twilight Evening twilight Dark night Moon
Date Astro. Nautical Nautical Astro. Start End Illum.
2020-07-01 3h38m 4h41m 23h00m 0h03m 3h15m 3h38m 0.88
2020-07-02 3h39m 4h42m 22h59m 0h02m 0.95
2020-07-03 3h40m 4h43m 22h59m 0h01m 0.95
2020-07-04 3h42m 4h43m 22h58m 0h00m 0.99
2020-07-05 3h43m 4h44m 22h58m 23h59m 1
2020-07-06 3h44m 4h45m 22h57m 23h58m 0.99
2020-07-07 3h46m 4h46m 22h56m 23h57m 0.95
2020-07-08 3h47m 4h47m 22h56m 23h56m 23h56m 0.89
2020-07-09 3h49m 4h48m 22h55m 23h54m 23h54m 0h05m 0.82
2020-07-10 3h50m 4h49m 22h54m 23h53m 23h53m 0h30m 0.74
2020-07-11 3h52m 4h51m 22h53m 23h52m 23h52m 0h52m 0.65
2020-07-12 3h54m 4h52m 22h52m 23h50m 23h50m 1h13m 0.55
2020-07-13 3h55m 4h53m 22h51m 23h49m 23h49m 1h33m 0.45
2020-07-14 3h57m 4h54m 22h50m 23h47m 23h47m 1h55m 0.36
2020-07-15 3h59m 4h55m 22h49m 23h46m 23h46m 2h19m 0.26
2020-07-16 4h01m 4h57m 22h48m 23h44m 23h44m 2h47m 0.18
2020-07-17 4h02m 4h58m 22h47m 23h43m 23h43m 3h20m 0.11
2020-07-18 4h04m 4h59m 22h46m 23h41m 23h41m 4h01m 0.05
2020-07-19 4h06m 5h01m 22h45m 23h39m 23h39m 4h06m 0.01
2020-07-20 4h08m 5h02m 22h44m 23h38m 23h38m 4h08m 0
2020-07-21 4h10m 5h03m 22h42m 23h36m 23h36m 4h10m 0.01
2020-07-22 4h12m 5h05m 22h41m 23h34m 23h34m 4h12m 0.06
2020-07-23 4h14m 5h06m 22h40m 23h32m 23h32m 4h14m 0.12
2020-07-24 4h16m 5h08m 22h38m 23h30m 23h58m 4h16m 0.21
2020-07-25 4h17m 5h09m 22h37m 23h28m 4h17m 0.32
2020-07-26 4h19m 5h10m 22h35m 23h26m 0h24m 4h19m 0.44
2020-07-27 4h21m 5h12m 22h34m 23h24m 0h50m 4h21m 0.56
2020-07-28 4h23m 5h13m 22h32m 23h22m 1h18m 4h23m 0.67
2020-07-29 4h25m 5h15m 22h31m 23h20m 1h49m 4h25m 0.77
2020-07-30 4h27m 5h16m 22h29m 23h18m 2h27m 4h27m 0.86
2020-07-31 4h29m 5h18m 22h28m 23h16m 3h11m 4h29m 0.93

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
Jul 1  We            Venus: 34.3° W
    3  Fr  11:18 pm  Moon Descending Node
    4  Sa  10:59 am  Aphelion: 1.0167 AU
    4  Sa  09:37 pm  Moon South Dec.: 24.1° S
    5  Su  12:30 am  Penumbral Lunar Eclipse
	                    (Americas, sw Europe, Africa)
    5  Su  12:44 am  Full Moon
    5  Su  05:37 pm  Moon-Jupiter: 1.9° N
    6  Mo  04:45 am  Moon-Saturn: 2.6° N
   11  Sa  08:17 am  Venus-Aldebaran: 1° N
   11  Sa  03:36 pm  Moon-Mars: 2.2° N
   12  Su  03:27 pm  Moon Apogee: 404200 km
   12  Su  07:29 pm  Last Quarter
   14  Tu  03:03 am  Jupiter Opposition
   17  Fr  03:26 am  Moon-Venus: 3.4° S
   18  Sa  08:33 am  Moon Ascending Node
   19  Su  07:51 am  Moon North Dec.: 24.1° N
   20  Mo  01:33 pm  New Moon
   20  Mo  05:33 pm  Saturn Opposition
   22  We  10:59 am  Mercury Greatest Elongation: 20.1° W
   25  Sa  12:54 am  Moon Perigee: 368400 km
   27  Mo  08:32 am  First Quarter
   27  Mo  05:08 pm  Delta Aquarid Meteor Shower: ZHR = 20
   31  Fr  05:32 am  Moon Descending Node
Aug 1  Sa            Venus: 45.2° 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, 2020    Local time zone: EDT
+-----------------------------------------------------------------------+
| DATE |  SUN     SUN  DAYLIGHT|   TWILIGHT*    |MOON  RISE OR    ILLUM |
|      |  RISE    SET    HOURS |  END    START  |PHASE SET** TIME FRACTN|
+=======================================================================+
|Wed  1| 06:01a  09:31p  15:30 | 10:57p  04:35a |      Set  03:49a   87%|
|Thu  2| 06:01a  09:31p  15:29 | 10:56p  04:36a |      Set  04:29a   94%|
|Fri  3| 06:02a  09:31p  15:28 | 10:56p  04:37a |      Set  05:18a   98%|
|Sat  4| 06:03a  09:31p  15:27 | 10:55p  04:38a |      Set  06:15a  100%|
+------+-----------------------+----------------+-----------------------+
|Sun  5| 06:03a  09:30p  15:26 | 10:55p  04:39a |Full  Rise 10:19p   99%|
|Mon  6| 06:04a  09:30p  15:25 | 10:54p  04:40a |      Rise 11:02p   96%|
|Tue  7| 06:05a  09:29p  15:24 | 10:53p  04:41a |      Rise 11:37p   91%|
|Wed  8| 06:06a  09:29p  15:23 | 10:53p  04:42a |      Rise 12:05a   85%|
|Thu  9| 06:06a  09:29p  15:22 | 10:52p  04:43a |      Rise 12:30a   77%|
|Fri 10| 06:07a  09:28p  15:20 | 10:51p  04:44a |      Rise 12:52a   68%|
|Sat 11| 06:08a  09:27p  15:19 | 10:50p  04:45a |      Rise 01:12a   59%|
+------+-----------------------+----------------+-----------------------+
|Sun 12| 06:09a  09:27p  15:17 | 10:49p  04:46a |L Qtr Rise 01:33a   50%|
|Mon 13| 06:10a  09:26p  15:16 | 10:48p  04:47a |      Rise 01:55a   40%|
|Tue 14| 06:11a  09:25p  15:14 | 10:47p  04:49a |      Rise 02:19a   31%|
|Wed 15| 06:11a  09:25p  15:13 | 10:46p  04:50a |      Rise 02:47a   23%|
|Thu 16| 06:12a  09:24p  15:11 | 10:45p  04:51a |      Rise 03:20a   15%|
|Fri 17| 06:13a  09:23p  15:09 | 10:44p  04:52a |      Rise 04:01a    8%|
|Sat 18| 06:14a  09:22p  15:08 | 10:43p  04:54a |      Rise 04:52a    4%|
+------+-----------------------+----------------+-----------------------+
|Sun 19| 06:15a  09:21p  15:06 | 10:41p  04:55a |      Rise 05:52a    1%|
|Mon 20| 06:16a  09:21p  15:04 | 10:40p  04:56a |New   Set  09:45p    0%|
|Tue 21| 06:17a  09:20p  15:02 | 10:39p  04:58a |      Set  10:26p    2%|
|Wed 22| 06:18a  09:19p  15:00 | 10:38p  04:59a |      Set  11:01p    7%|
|Thu 23| 06:19a  09:18p  14:58 | 10:36p  05:00a |      Set  11:31p   14%|
|Fri 24| 06:20a  09:17p  14:56 | 10:35p  05:02a |      Set  11:58p   22%|
|Sat 25| 06:21a  09:16p  14:54 | 10:33p  05:03a |      Set  12:24a   33%|
+------+-----------------------+----------------+-----------------------+
|Sun 26| 06:22a  09:15p  14:52 | 10:32p  05:05a |      Set  12:50a   44%|
|Mon 27| 06:24a  09:13p  14:49 | 10:30p  05:06a |F Qtr Set  01:18a   55%|
|Tue 28| 06:25a  09:12p  14:47 | 10:29p  05:08a |      Set  01:49a   67%|
|Wed 29| 06:26a  09:11p  14:45 | 10:27p  05:09a |      Set  02:27a   77%|
|Thu 30| 06:27a  09:10p  14:42 | 10:26p  05:11a |      Set  03:11a   85%|
|Fri 31| 06:28a  09:09p  14:40 | 10:24p  05:12a |      Set  04:04a   92%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunrise and sunset

						
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