SkyWatch: December 2025

Dates and times are Universal Time
Positions are geocentric J2000
Pluto's position is astrometric, i.e., it accounts for the approx. 6 hour light-time
Elongations are in degrees
Calculations by Brian D. Warner

Location Information for Rise/Set times
Enter Longitude and Latitude in degrees (e.g., 39.1003).
Western/Southern Hemisphere = negative
Enter UTOffset in hours (e.g., 9.5)

Examples: Colo Spgs, CO: –105 +39 -7.0;    Adelaide, Australia =  +138 –34 +9.5)

Longitude   Latitude   UTOffset  

Sun Information

Currently (Thu, 2025 Dec 18 03:03 UT)
RA 17 42 20.2
Dec -23 22 26.1
X -0.067331
Y -0.900767
Z -0.390469
R 0.984064

Local time for sunrise/sunset/twilight
Civil Twilight (CT): Sun 6º below horizon
Nautical Twilight (NT): Sun 12º below horizon
Astronomical Twilight (AT): Sun 18º below horizon

Local
Date
AT
Start
NT
Start
CT
Start
Sun
Rise
Sun
Set
CT
End
NT
End
AT
End
2025 Dec 17   05:3606:0906:4207:1216:3817:0817:4218:14
2025 Dec 18   05:3706:0906:4307:1316:3917:0917:4218:15
2025 Dec 19   05:3706:1006:4407:1316:3917:0917:4318:15

 


Moon Information


Currently (Thu, 2025 Dec 18 03:03 UT)
RA          16 08 55.6
Dec -26 02 06.5
Phase -0.035  (+ = waxing; - = waning)
Parallax 0.900 degrees
Diameter 29.43 arcminutes
Elong (RA) 23W

Local time for moon rise/transit/set (for UT date)

UT DateRiseTransitSet
2025 Dec 1705:1710:0014:22
2025 Dec 1806:1810:4915:05
2025 Dec 1907:1511:4115:58

Phases for 2025

New First Full Last
---------------------------------------------------------------------------------------

Dec 01 2024 06:22 Dec 08 2024 15:28 Dec 15 2024 09:03 Dec 22 2024 22:19
Dec 30 2024 22:28 Jan 06 2025 23:57 Jan 13 2025 22:27 Jan 21 2025 20:31
Jan 29 2025 12:36 Feb 05 2025 08:03 Feb 12 2025 13:54 Feb 20 2025 17:33
Feb 28 2025 00:45 Mar 06 2025 16:32 Mar 14 2025 06:55 Mar 22 2025 11:30
Mar 29 2025 10:58 Apr 05 2025 02:15 Apr 13 2025 00:22 Apr 21 2025 01:36
Apr 27 2025 19:31 May 04 2025 13:53 May 12 2025 16:56 May 20 2025 11:59
May 27 2025 03:02 Jun 03 2025 03:42 Jun 11 2025 07:44 Jun 18 2025 19:20
Jun 25 2025 10:32 Jul 02 2025 19:31 Jul 10 2025 20:37 Jul 18 2025 00:38
Jul 24 2025 19:11 Aug 01 2025 12:42 Aug 09 2025 07:55 Aug 16 2025 05:13
Aug 23 2025 06:07 Aug 31 2025 06:26 Sep 07 2025 18:09 Sep 14 2025 10:34
Sep 21 2025 19:54 Sep 29 2025 23:54 Oct 07 2025 03:48 Oct 13 2025 18:13
Oct 21 2025 12:26 Oct 29 2025 16:22 Nov 05 2025 13:20 Nov 12 2025 05:29
Nov 20 2025 06:48 Nov 28 2025 07:00 Dec 04 2025 23:15 Dec 11 2025 20:52
Dec 20 2025 01:44 Dec 27 2025 19:11 Jan 03 2026 10:04 Jan 10 2026 15:49
Jan 18 2026 19:53 Jan 26 2026 04:48 Feb 01 2026 22:10 Feb 09 2026 12:44

Planet Information


Currently (Thu, 2025 Dec 18 03:03 UT)
Local Rise/Transit/Set times are given at the end of each line
Sun         17 42 20.2   -23 22 26.1       
Opposition 05 42 20.2 +23 22 26.1 180E 16:35 23:54 07:12
Mercury 16 24 19.6 -20 26 46.7 18W 05:51 10:37 15:21
Venus 17 21 50.7 -23 06 10.1 5W 06:58 11:34 16:09
Mars 18 07 20.4 -24 13 17.8 6E 07:45 12:17 16:47
Jupiter 07 38 07.5 +21 43 42.8 153W 18:37 01:48 08:58
Saturn 23 45 51.1 -04 02 43.9 89E 11:58 17:45 23:25
Uranus 03 43 16.1 +19 31 15.3 152E 14:51 21:53 04:56
Neptune 23 58 33.7 -01 37 05.7 93E 12:03 17:58 23:45
Pluto 20 20 30.9 -23 23 14.2 36E 09:43 14:20 18:51

 

Selected Positions for December 2025
                Dec 01 2025                       Dec 16 2025                       Dec 31 2025
-------------------------------------------------------------------------------------------------------------
Sun 16 27 49.9 -21 44 48.4 17 33 28.5 -23 17 45.4 19 49 50.1 -21 02 21.7
Opposition 04 27 49.9 +21 44 48.4 180E 05 33 28.5 +23 17 45.4 180E 07 49 50.1 +21 02 21.7 180E
Mercury 15 15 03.0 -15 21 31.7 18W 16 12 57.3 -19 43 28.7 19W 19 35 55.7 -23 28 15.5 4W
Venus 15 51 16.3 -19 25 35.6 9W 17 10 57.9 -22 50 00.2 5W 20 00 03.8 -21 36 08.5 2E
Mars 17 11 39.6 -23 38 12.1 10E 18 00 42.8 -24 13 02.8 6E 19 43 51.0 -22 17 00.5 2W
Jupiter 07 44 22.8 +21 25 58.0 135W 07 39 01.6 +21 41 17.2 151W 07 22 22.0 +22 21 47.7 173E
Saturn 23 44 40.7 -04 14 19.3 106E 23 45 37.0 -04 04 43.3 91E 23 51 56.7 -03 17 04.7 61E
Uranus 03 45 59.7 +19 39 47.0 170E 03 43 34.0 +19 32 11.5 154E 03 40 03.4 +19 21 13.4 122E
Neptune 23 58 36.6 -01 37 29.8 110E 23 58 32.1 -01 37 21.0 95E 23 59 52.5 -01 27 21.8 64E
Pluto 20 18 45.2 -23 28 48.2 53E 20 20 17.1 -23 23 56.2 38E 20 24 12.0 -23 12 20.6 8E