Simi Valley, California, USA — Moonrise, Moonset, and Moon Phases, December 2025

Moonrise, Moonset, and Phase Calendar for Simi Valley, December 2025

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2025	Moonrise/Moonset						Meridian Passing
Dec	Moonrise		Moonset		Moonrise		Time		Distance (mi)	Illumination
1	-		2:50 am	↑ (283°)	2:08 pm	↑ (74°)	9:00 pm	(70.7°)	224,766	88.7%
2	-		4:03 am	↑ (291°)	2:45 pm	↑ (66°)	9:57 pm	(76.6°)	222,702	95.4%
3	-		5:20 am	↑ (298°)	3:29 pm	↑ (60°)	10:59 pm	(81.1°)	221,826	99.1%
4	-		6:38 am	↑ (302°)	4:24 pm	↑ (56°)	Moon does not pass the meridian on this day.
5	-		7:52 am	↑ (305°)	5:28 pm	↑ (55°)	12:06 am	(83.5°)	222,281	99.6%
6	-		8:57 am	↑ (304°)	6:40 pm	↑ (57°)	1:14 am	(83.6°)	224,047	96.8%
7	-		9:50 am	↑ (301°)	7:53 pm	↑ (61°)	2:18 am	(81.5°)	226,919	91.1%
8	-		10:32 am	↑ (295°)	9:04 pm	↑ (68°)	3:17 am	(77.5°)	230,575	83.2%
9	-		11:07 am	↑ (289°)	10:10 pm	↑ (75°)	4:10 am	(72.4°)	234,616	73.8%
10	-		11:36 am	↑ (282°)	11:13 pm	↑ (82°)	4:58 am	(66.6°)	238,703	63.6%
11	-		12:02 pm	↑ (274°)	-		5:42 am	(60.4°)	242,514	53.1%
12	12:12 am	↑ (89°)	12:26 pm	↑ (267°)	-		6:23 am	(54.3°)	245,839	42.9%
13	1:09 am	↑ (97°)	12:50 pm	↑ (260°)	-		7:04 am	(48.3°)	248,525	33.2%
14	2:06 am	↑ (104°)	1:15 pm	↑ (253°)	-		7:44 am	(42.7°)	250,511	24.3%
15	3:04 am	↑ (110°)	1:43 pm	↑ (248°)	-		8:26 am	(37.6°)	251,788	16.5%
16	4:02 am	↑ (116°)	2:14 pm	↑ (242°)	-		9:11 am	(33.3°)	252,399	10.0%
17	5:01 am	↑ (120°)	2:51 pm	↑ (238°)	-		9:58 am	(29.9°)	252,416	5.0%
18	5:59 am	↑ (123°)	3:33 pm	↑ (236°)	-		10:47 am	(27.7°)	251,922	1.7%
19	6:55 am	↑ (125°)	4:23 pm	↑ (235°)	-		11:39 am	(26.7°)	251,000	0.2%
20	7:47 am	↑ (125°)	5:18 pm	↑ (236°)	-		12:31 pm	(27.3°)	249,717	0.7%
21	8:32 am	↑ (122°)	6:18 pm	↑ (239°)	-		1:23 pm	(29.2°)	248,121	3.2%
22	9:12 am	↑ (119°)	7:20 pm	↑ (243°)	-		2:13 pm	(32.5°)	246,232	7.7%
23	9:46 am	↑ (113°)	8:22 pm	↑ (249°)	-		3:01 pm	(37.0°)	244,061	14.0%
24	10:16 am	↑ (107°)	9:25 pm	↑ (256°)	-		3:47 pm	(42.3°)	241,611	22.0%
25	10:44 am	↑ (100°)	10:27 pm	↑ (264°)	-		4:31 pm	(48.4°)	238,903	31.5%
26	11:10 am	↑ (92°)	11:30 pm	↑ (272°)	-		5:16 pm	(54.9°)	235,991	42.0%
27	11:37 am	↑ (85°)	-		-		6:01 pm	(61.6°)	232,982	53.3%
28	-		12:35 am	↑ (280°)	12:06 pm	↑ (77°)	6:49 pm	(68.1°)	230,050	64.7%
29	-		1:43 am	↑ (288°)	12:39 pm	↑ (69°)	7:42 pm	(74.2°)	227,417	75.6%
30	-		2:55 am	↑ (295°)	1:18 pm	↑ (63°)	8:39 pm	(79.2°)	225,356	85.3%
31	-		4:10 am	↑ (300°)	2:05 pm	↑ (58°)	9:42 pm	(82.6°)	224,141	92.9%
* All times are local time for Simi Valley. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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