Rock Springs, Wyoming, USA — Moonrise, Moonset, and Moon Phases, December 2025

Moonrise, Moonset, and Phase Calendar for Rock Springs, December 2025

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2025	Moonrise/Moonset						Meridian Passing
Dec	Moonrise		Moonset		Moonrise		Time		Distance (mi)	Illumination
1	-		3:19 am	↑ (284°)	2:18 pm	↑ (72°)	9:20 pm	(63.1°)	224,835	88.5%
2	-		4:38 am	↑ (293°)	2:48 pm	↑ (64°)	10:17 pm	(69.0°)	222,743	95.2%
3	-		6:01 am	↑ (301°)	3:26 pm	↑ (57°)	11:19 pm	(73.5°)	221,833	99.1%
4	-		7:24 am	↑ (306°)	4:16 pm	↑ (52°)	Moon does not pass the meridian on this day.
5	-		8:41 am	↑ (309°)	5:19 pm	↑ (51°)	12:26 am	(76.1°)	222,252	99.6%
6	-		9:45 am	↑ (308°)	6:32 pm	↑ (53°)	1:34 am	(76.2°)	223,984	96.9%
7	-		10:34 am	↑ (304°)	7:50 pm	↑ (58°)	2:39 am	(74.1°)	226,831	91.3%
8	-		11:12 am	↑ (298°)	9:07 pm	↑ (65°)	3:38 am	(70.2°)	230,472	83.5%
9	-		11:41 am	↑ (291°)	10:19 pm	↑ (73°)	4:31 am	(65.1°)	234,507	74.1%
10	-		12:05 pm	↑ (283°)	11:27 pm	↑ (81°)	5:19 am	(59.3°)	238,597	63.9%
11	-		12:26 pm	↑ (275°)	-		6:02 am	(53.2°)	242,419	53.4%
12	12:31 am	↑ (89°)	12:45 pm	↑ (267°)	-		6:44 am	(47.0°)	245,758	43.2%
13	1:34 am	↑ (97°)	1:04 pm	↑ (259°)	-		7:24 am	(41.1°)	248,462	33.4%
14	2:36 am	↑ (105°)	1:25 pm	↑ (252°)	-		8:05 am	(35.5°)	250,468	24.5%
15	3:39 am	↑ (112°)	1:47 pm	↑ (245°)	-		8:47 am	(30.4°)	251,763	16.7%
16	4:42 am	↑ (118°)	2:14 pm	↑ (239°)	-		9:31 am	(26.0°)	252,391	10.2%
17	5:45 am	↑ (124°)	2:46 pm	↑ (235°)	-		10:18 am	(22.6°)	252,423	5.1%
18	6:47 am	↑ (127°)	3:26 pm	↑ (232°)	-		11:08 am	(20.3°)	251,941	1.8%
19	7:45 am	↑ (129°)	4:14 pm	↑ (231°)	-		11:59 am	(19.4°)	251,029	0.3%
20	8:36 am	↑ (129°)	5:10 pm	↑ (232°)	-		12:52 pm	(19.9°)	249,756	0.7%
21	9:19 am	↑ (126°)	6:13 pm	↑ (235°)	-		1:44 pm	(21.8°)	248,167	3.1%
22	9:55 am	↑ (122°)	7:19 pm	↑ (240°)	-		2:34 pm	(25.1°)	246,286	7.5%
23	10:24 am	↑ (116°)	8:27 pm	↑ (247°)	-		3:21 pm	(29.5°)	244,122	13.8%
24	10:50 am	↑ (109°)	9:35 pm	↑ (254°)	-		4:07 pm	(34.8°)	241,679	21.8%
25	11:12 am	↑ (101°)	10:42 pm	↑ (263°)	-		4:52 pm	(40.8°)	238,978	31.2%
26	11:33 am	↑ (93°)	11:51 pm	↑ (271°)	-		5:36 pm	(47.3°)	236,070	41.7%
27	11:55 am	↑ (84°)	-		-		6:22 pm	(54.0°)	233,062	53.0%
28	-		1:02 am	↑ (280°)	12:18 pm	↑ (76°)	7:10 pm	(60.5°)	230,125	64.4%
29	-		2:16 am	↑ (289°)	12:44 pm	↑ (67°)	8:02 pm	(66.6°)	227,481	75.3%
30	-		3:34 am	↑ (297°)	1:17 pm	↑ (60°)	9:00 pm	(71.6°)	225,400	85.0%
31	-		4:55 am	↑ (304°)	2:00 pm	↑ (54°)	10:02 pm	(75.1°)	224,160	92.8%
* All times are local time for Rock Springs. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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