Longmont, Colorado, USA — Moonrise, Moonset, and Moon Phases, December 2025

Moonrise, Moonset, and Phase Calendar for Longmont, December 2025

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2025	Moonrise/Moonset						Meridian Passing
Dec	Moonrise		Moonset		Moonrise		Time		Distance (mi)	Illumination
1	-		3:00 am	↑ (283°)	2:03 pm	↑ (73°)	9:03 pm	(64.5°)	224,865	88.4%
2	-		4:17 am	↑ (292°)	2:35 pm	↑ (65°)	10:00 pm	(70.4°)	222,760	95.2%
3	-		5:39 am	↑ (300°)	3:14 pm	↑ (58°)	11:02 pm	(74.9°)	221,836	99.0%
4	-		7:01 am	↑ (305°)	4:05 pm	↑ (53°)	Moon does not pass the meridian on this day.
5	-		8:17 am	↑ (308°)	5:08 pm	↑ (52°)	12:09 am	(77.5°)	222,239	99.6%
6	-		9:22 am	↑ (307°)	6:21 pm	↑ (54°)	1:17 am	(77.7°)	223,958	97.0%
7	-		10:12 am	↑ (303°)	7:38 pm	↑ (59°)	2:21 am	(75.6°)	226,793	91.4%
8	-		10:51 am	↑ (298°)	8:53 pm	↑ (65°)	3:21 am	(71.7°)	230,427	83.6%
9	-		11:22 am	↑ (290°)	10:04 pm	↑ (73°)	4:14 am	(66.6°)	234,460	74.2%
10	-		11:47 am	↑ (283°)	11:11 pm	↑ (81°)	5:02 am	(60.8°)	238,551	64.0%
11	-		12:08 pm	↑ (275°)	-		5:45 am	(54.7°)	242,377	53.5%
12	12:14 am	↑ (89°)	12:29 pm	↑ (267°)	-		6:27 am	(48.5°)	245,724	43.3%
13	1:16 am	↑ (97°)	12:49 pm	↑ (260°)	-		7:07 am	(42.6°)	248,435	33.5%
14	2:17 am	↑ (105°)	1:10 pm	↑ (252°)	-		7:48 am	(37.0°)	250,449	24.6%
15	3:18 am	↑ (112°)	1:34 pm	↑ (246°)	-		8:30 am	(31.9°)	251,752	16.8%
16	4:20 am	↑ (118°)	2:02 pm	↑ (240°)	-		9:14 am	(27.5°)	252,387	10.2%
17	5:23 am	↑ (123°)	2:35 pm	↑ (236°)	-		10:01 am	(24.1°)	252,425	5.2%
18	6:24 am	↑ (126°)	3:15 pm	↑ (233°)	-		10:51 am	(21.8°)	251,949	1.8%
19	7:21 am	↑ (128°)	4:03 pm	↑ (232°)	-		11:42 am	(20.8°)	251,042	0.3%
20	8:13 am	↑ (128°)	4:59 pm	↑ (233°)	-		12:35 pm	(21.3°)	249,772	0.7%
21	8:56 am	↑ (126°)	6:01 pm	↑ (236°)	-		1:27 pm	(23.2°)	248,187	3.1%
22	9:33 am	↑ (121°)	7:06 pm	↑ (241°)	-		2:17 pm	(26.4°)	246,309	7.5%
23	10:04 am	↑ (116°)	8:13 pm	↑ (247°)	-		3:04 pm	(30.8°)	244,149	13.7%
24	10:30 am	↑ (109°)	9:19 pm	↑ (255°)	-		3:50 pm	(36.2°)	241,709	21.7%
25	10:54 am	↑ (101°)	10:26 pm	↑ (263°)	-		4:35 pm	(42.2°)	239,010	31.1%
26	11:16 am	↑ (93°)	11:33 pm	↑ (271°)	-		5:19 pm	(48.7°)	236,104	41.6%
27	11:39 am	↑ (84°)	-		-		6:05 pm	(55.3°)	233,097	52.8%
28	-		12:43 am	↑ (280°)	12:03 pm	↑ (76°)	6:53 pm	(61.9°)	230,157	64.3%
29	-		1:56 am	↑ (289°)	12:31 pm	↑ (68°)	7:45 pm	(68.0°)	227,509	75.2%
30	-		3:13 am	↑ (297°)	1:05 pm	↑ (61°)	8:42 pm	(73.0°)	225,420	84.9%
31	-		4:32 am	↑ (303°)	1:49 pm	↑ (55°)	9:45 pm	(76.5°)	224,169	92.7%
* All times are local time for Longmont. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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