Monts de l'Observatoire, French Guiana — Moonrise, Moonset, and Moon Phases, December 2025

Moonrise, Moonset, and Phase Calendar for Monts de l'Observatoire, December 2025

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2025	Moonrise/Moonset						Meridian Passing
Dec	Moonrise		Moonset		Moonrise		Time		Distance (mi)	Illumination
1	-		2:45 am	↑ (279°)	3:05 pm	↑ (78°)	9:22 pm	(80.0°)	225,262	87.2%
2	-		3:39 am	↑ (286°)	3:58 pm	↑ (71°)	10:18 pm	(73.9°)	223,003	94.3%
3	-		4:39 am	↑ (291°)	4:56 pm	↑ (66°)	11:19 pm	(69.1°)	221,891	98.7%
4	-		5:43 am	↑ (296°)	6:00 pm	↑ (63°)	Moon does not pass the meridian on this day.
5	-		6:51 am	↑ (298°)	7:07 pm	↑ (62°)	12:25 am	(66.2°)	222,094	99.8%
6	-		7:58 am	↑ (298°)	8:14 pm	↑ (63°)	1:33 am	(65.6°)	223,626	97.6%
7	-		9:02 am	↑ (296°)	9:17 pm	↑ (66°)	2:39 am	(67.4°)	226,315	92.4%
8	-		9:59 am	↑ (292°)	10:14 pm	↑ (71°)	3:39 am	(71.1°)	229,854	84.8%
9	-		10:50 am	↑ (287°)	11:06 pm	↑ (76°)	4:33 am	(76.0°)	233,850	75.6%
10	-		11:35 am	↑ (281°)	11:53 pm	↑ (82°)	5:21 am	(81.8°)	237,954	65.5%
11	-		12:17 pm	↑ (275°)	-		6:06 am	(87.9°)	241,835	55.1%
12	12:37 am	↑ (88°)	12:57 pm	↑ (269°)	-		6:47 am	(85.9°)	245,265	44.8%
13	1:19 am	↑ (94°)	1:35 pm	↑ (263°)	-		7:28 am	(79.8°)	248,076	34.9%
14	2:02 am	↑ (100°)	2:14 pm	↑ (257°)	-		8:08 am	(74.1°)	250,196	25.9%
15	2:45 am	↑ (105°)	2:55 pm	↑ (252°)	-		8:50 am	(68.9°)	251,602	17.9%
16	3:30 am	↑ (110°)	3:38 pm	↑ (248°)	-		9:34 am	(64.4°)	252,333	11.1%
17	4:17 am	↑ (114°)	4:24 pm	↑ (245°)	-		10:20 am	(60.8°)	252,454	5.8%
18	5:06 am	↑ (117°)	5:13 pm	↑ (243°)	-		11:10 am	(58.3°)	252,048	2.2%
19	5:58 am	↑ (118°)	6:04 pm	↑ (242°)	-		12:01 pm	(57.1°)	251,201	0.4%
20	6:50 am	↑ (118°)	6:57 pm	↑ (242°)	-		12:54 pm	(57.4°)	249,981	0.5%
21	7:42 am	↑ (117°)	7:49 pm	↑ (244°)	-		1:45 pm	(59.1°)	248,441	2.6%
22	8:32 am	↑ (114°)	8:40 pm	↑ (248°)	-		2:36 pm	(62.2°)	246,605	6.7%
23	9:19 am	↑ (110°)	9:30 pm	↑ (252°)	-		3:24 pm	(66.5°)	244,487	12.7%
24	10:04 am	↑ (105°)	10:17 pm	↑ (258°)	-		4:10 pm	(71.7°)	242,087	20.4%
25	10:47 am	↑ (99°)	11:03 pm	↑ (264°)	-		4:55 pm	(77.7°)	239,426	29.6%
26	11:29 am	↑ (93°)	11:50 pm	↑ (270°)	-		5:39 pm	(84.2°)	236,544	40.0%
27	12:12 pm	↑ (87°)	-		-		6:24 pm	(89.1°)	233,544	51.2%
28	-		12:37 am	↑ (277°)	12:57 pm	↑ (80°)	7:12 pm	(82.5°)	230,580	62.6%
29	-		1:28 am	↑ (283°)	1:46 pm	↑ (74°)	8:03 pm	(76.3°)	227,874	73.6%
30	-		2:22 am	↑ (289°)	2:39 pm	↑ (68°)	9:00 pm	(71.1°)	225,682	83.6%
31	-		3:22 am	↑ (294°)	3:38 pm	↑ (64°)	10:02 pm	(67.3°)	224,292	91.7%
* All times are local time for Monts de l'Observatoire. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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