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Ephemeris: 05/31/2024 – Previewing June’s skies
This is Ephemeris for Friday, May 31st. Today the Sun will be up for 15 hours and 20 minutes, setting at 9:21, and it will rise tomorrow at 6:00. The Moon, 1 day past last quarter, will rise at 3:12 tomorrow morning.
This is the last program of Ephemeris’ 49th orbit of the Sun, so let’s preview June skies, starting the 50th circuit. There will be a lot of sunlight in June. The daylight hours will increase a bit from 15 hours and 21 minutes tomorrow to 15 hours and 34 minutes on the 20th, the summer solstice, retreating back to 15 hours and 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 will hover around 68 degrees. Local noon, when the Sun is actually due south in the Interlochen area will occur at about 1:43 p.m.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT–4 hours). They may be different for your location.
Addendum
June Evening Star Chart
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 Interlochen/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 11 p.m. and 4 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, or 28 minutes. 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 for weekly positions.
June Morning Star Chart
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,
Twilight Limits, Nautical and Astronomical
| EDT | |||||||
| Morning | Twilight | Evening | Twilight | Dark | Night | Moon | |
| Date | Astro. | Nautical | Nautical | Astro. | Start | End | Illum. |
| 2024-06-01 | 3h39m | 4h38m | 22h47m | 23h46m | 23h46m | 3h13m | 0.23 |
| 2024-06-02 | 3h38m | 4h37m | 22h48m | 23h48m | 23h48m | 3h33m | 0.14 |
| 2024-06-03 | 3h36m | 4h37m | 22h49m | 23h49m | 23h49m | 3h36m | 0.07 |
| 2024-06-04 | 3h35m | 4h36m | 22h50m | 23h51m | 23h51m | 3h35m | 0.02 |
| 2024-06-05 | 3h34m | 4h35m | 22h51m | 23h52m | 23h52m | 3h34m | 0.00 |
| 2024-06-06 | 3h33m | 4h35m | 22h52m | 23h54m | 23h54m | 3h33m | 0.01 |
| 2024-06-07 | 3h32m | 4h34m | 22h53m | 23h55m | 23h55m | 3h32m | 0.03 |
| 2024-06-08 | 3h32m | 4h34m | 22h54m | 23h56m | – | 3h32m | 0.08 |
| 2024-06-09 | 3h31m | 4h33m | 22h55m | 23h57m | 0h07m | 3h31m | 0.15 |
| 2024-06-10 | 3h30m | 4h33m | 22h56m | 23h58m | 0h42m | 3h30m | 0.23 |
| 2024-06-11 | 3h30m | 4h33m | 22h56m | 23h59m | 1h10m | 3h30m | 0.31 |
| 2024-06-12 | 3h29m | 4h32m | 22h57m | 0h00m | 1h32m | 3h29m | 0.40 |
| 2024-06-13 | 3h29m | 4h32m | 22h58m | 0h01m | 1h50m | 3h29m | 0.50 |
| 2024-06-14 | 3h28m | 4h32m | 22h58m | 0h02m | 2h06m | 3h28m | 0.59 |
| 2024-06-15 | 3h28m | 4h32m | 22h59m | 0h03m | 2h22m | 3h28m | 0.68 |
| 2024-06-16 | 3h28m | 4h32m | 22h59m | 0h03m | 2h38m | 3h28m | 0.77 |
| 2024-06-17 | 3h28m | 4h32m | 23h00m | 0h04m | 2h56m | 3h28m | 0.85 |
| 2024-06-18 | 3h28m | 4h32m | 23h00m | 0h04m | 3h16m | 3h28m | 0.91 |
| 2024-06-19 | 3h28m | 4h32m | 23h00m | 0h05m | – | – | 0.96 |
| 2024-06-20 | 3h28m | 4h32m | 23h01m | 0h05m | – | – | 0.99 |
| 2024-06-21 | 3h28m | 4h32m | 23h01m | 0h05m | – | – | 1.00 |
| 2024-06-22 | 3h28m | 4h33m | 23h01m | 0h05m | – | – | 0.98 |
| 2024-06-23 | 3h29m | 4h33m | 23h01m | 0h05m | – | – | 0.94 |
| 2024-06-24 | 3h29m | 4h34m | 23h01m | 0h05m | – | – | 0.88 |
| 2024-06-25 | 3h30m | 4h34m | 23h01m | 0h05m | 0h05m | 0h09m | 0.79 |
| 2024-06-26 | 3h31m | 4h34m | 23h01m | 0h05m | 0h05m | 0h36m | 0.69 |
| 2024-06-27 | 3h31m | 4h35m | 23h01m | 0h04m | 0h04m | 0h58m | 0.58 |
| 2024-06-28 | 3h32m | 4h36m | 23h01m | 0h04m | 0h04m | 1h18m | 0.47 |
| 2024-06-29 | 3h33m | 4h36m | 23h00m | 0h03m | 0h03m | 1h38m | 0.35 |
| 2024-06-30 | 3h34m | 4h37m | 23h00m | 0h03m | 0h03m | 1h58m | 0.25 |
The twilight calendar was generated using Cartes du Ciel (Sky Charts), with some corrections.
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
Jun 1 Sa Venus: .9° W
1 Sa 11:08 pm Moon Ascending Node
2 Su 3:23 am Moon Perigee: 368100 km
2 Su 7:37 pm Moon-Mars: 2.4° S
4 Tu 11:12 am Venus Superior Conj.
6 Th 8:38 am New Moon
7 Fr 12:40 pm Moon North Dec.: 28.4° N
9 Su 3:23 am Moon-Pollux: 1.9° N
10 Mo 3:34 am Moon-Beehive: 3.4° S
14 Fr 1:18 am First Quarter
14 Fr 9:36 am Moon Apogee: 404100 km
14 Fr 12:15 pm Mercury Superior Conj.
15 Sa 4:17 pm Moon Descending Node
16 Su 1:28 pm Moon-Spica: 1.3° S
20 Th 6:33 am Moon-Antares: .4° S
20 Th 4:51 pm Summer Solstice
21 Fr 9:08 pm Full Moon
21 Fr 10:41 pm Moon South Dec.: 28.3° S
27 Th 7:45 am Moon Perigee: 369300 km
27 Th 10:52 am Moon-Saturn: .1° S
28 Fr 1:39 pm Mercury-Pollux: 4.8° S
28 Fr 5:53 pm Last Quarter
29 Sa 12:26 am Moon Ascending Node
Jul 1 Mo Venus: 7.4° E
Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA’s GSFC),
http://eclipse.gsfc.nasa.gov/SKYCAL/SKYCAL.html.
Sun and Moon Rising and Setting Events
LU Ephemeris of Sky Events for Interlochen/TC
June, 2024 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 15:21 | 10:45p 04:36a | Rise 03:32a 25%|
+------+-----------------------+----------------+-----------------------+
|Sun 2| 05:59a 09:22p 15:23 | 10:46p 04:36a | Rise 03:54a 16%|
|Mon 3| 05:59a 09:23p 15:24 | 10:47p 04:35a | Rise 04:20a 8%|
|Tue 4| 05:58a 09:24p 15:25 | 10:48p 04:34a | Rise 04:51a 3%|
|Wed 5| 05:58a 09:24p 15:26 | 10:49p 04:34a | Rise 05:32a 0%|
|Thu 6| 05:57a 09:25p 15:27 | 10:50p 04:33a |New Set 10:18p 0%|
|Fri 7| 05:57a 09:26p 15:28 | 10:51p 04:32a | Set 11:19p 3%|
|Sat 8| 05:57a 09:26p 15:29 | 10:52p 04:32a | Set 12:06a 7%|
+------+-----------------------+----------------+-----------------------+
|Sun 9| 05:57a 09:27p 15:30 | 10:52p 04:32a | Set 12:42a 13%|
|Mon 10| 05:56a 09:28p 15:31 | 10:53p 04:31a | Set 01:09a 21%|
|Tue 11| 05:56a 09:28p 15:31 | 10:54p 04:31a | Set 01:31a 29%|
|Wed 12| 05:56a 09:29p 15:32 | 10:54p 04:31a | Set 01:49a 38%|
|Thu 13| 05:56a 09:29p 15:32 | 10:55p 04:30a | Set 02:06a 48%|
|Fri 14| 05:56a 09:30p 15:33 | 10:56p 04:30a |F Qtr Set 02:22a 57%|
|Sat 15| 05:56a 09:30p 15:33 | 10:56p 04:30a | Set 02:38a 67%|
+------+-----------------------+----------------+-----------------------+
|Sun 16| 05:56a 09:30p 15:34 | 10:57p 04:30a | Set 02:55a 75%|
|Mon 17| 05:56a 09:31p 15:34 | 10:57p 04:30a | Set 03:16a 83%|
|Tue 18| 05:56a 09:31p 15:34 | 10:57p 04:30a | Set 03:41a 90%|
|Wed 19| 05:56a 09:31p 15:34 | 10:58p 04:30a | Set 04:15a 95%|
|Thu 20| 05:57a 09:31p 15:34 | 10:58p 04:30a | Set 04:59a 99%|
|Fri 21| 05:57a 09:32p 15:34 | 10:58p 04:31a |Full Rise 09:57p 100%|
|Sat 22| 05:57a 09:32p 15:34 | 10:58p 04:31a | Rise 10:52p 99%|
+------+-----------------------+----------------+-----------------------+
|Sun 23| 05:57a 09:32p 15:34 | 10:58p 04:31a | Rise 11:35p 95%|
|Mon 24| 05:58a 09:32p 15:34 | 10:58p 04:31a | Rise 12:09a 89%|
|Tue 25| 05:58a 09:32p 15:33 | 10:58p 04:32a | Rise 12:35a 81%|
|Wed 26| 05:58a 09:32p 15:33 | 10:58p 04:32a | Rise 12:58a 71%|
|Thu 27| 05:59a 09:32p 15:33 | 10:58p 04:33a | Rise 01:18a 60%|
|Fri 28| 05:59a 09:32p 15:32 | 10:58p 04:34a |L Qtr Rise 01:37a 49%|
|Sat 29| 06:00a 09:32p 15:31 | 10:57p 04:34a | Rise 01:58a 38%|
+------+-----------------------+----------------+-----------------------+
|Sun 30| 06:00a 09:32p 15:31 | 10:57p 04:35a | Rise 02:22a 27%|
+-----------------------------------------------------------------------+
* Nautical Twilight
** Moonrise or moonset, whichever occurs between sunset and sunrise
Generated using my LookingUp for DOS program.
Bob Moler's Ephemeris Blog 