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

Moon: 77.4%
Waxing Gibbous
Current Time: May 7, 2025 at 5:41:12 am
Moon Direction: 296.95° WNW
Moon Altitude: -23.27°
Moon Distance: 249,196 mi
Next Full Moon: May 12, 2025, 10:55 am
Next New Moon: May 26, 2025, 9:02 pm
Next Moonrise: Today, 3:33 pm
Location of BoulderLocation

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

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2025Moonrise/MoonsetMeridian Passing
DecMoonriseMoonsetMoonriseTimeDistance (mi)Illumination
1-3:00 am (283°)2:04 pm (73°)9:04 pm(64.6°)224,86488.4%
2-4:18 am (292°)2:36 pm (65°)10:01 pm(70.6°)222,76095.2%
3-5:39 am (300°)3:16 pm (58°)11:03 pm(75.1°)221,83699.0%
4-7:01 am (305°)4:06 pm (53°)Moon does not pass the meridian on this day.
5-8:17 am (308°)5:09 pm (52°)12:10 am(77.6°)222,24099.6%
6-9:22 am (307°)6:22 pm (54°)1:17 am(77.8°)223,95997.0%
7-10:12 am (303°)7:39 pm (59°)2:22 am(75.8°)226,79591.4%
8-10:51 am (297°)8:54 pm (65°)3:21 am(71.9°)230,42983.5%
9-11:22 am (290°)10:05 pm (73°)4:14 am(66.8°)234,46274.2%
10-11:47 am (283°)11:12 pm (81°)5:02 am(61.0°)238,55364.0%
11-12:09 pm (275°)-5:46 am(54.8°)242,37953.5%
1212:15 am (89°)12:30 pm (267°)-6:28 am(48.7°)245,72543.3%
131:17 am (97°)12:50 pm (260°)-7:08 am(42.7°)248,43633.5%
142:17 am (104°)1:11 pm (252°)-7:49 am(37.1°)250,45024.6%
153:19 am (111°)1:35 pm (246°)-8:31 am(32.0°)251,75216.8%
164:21 am (118°)2:03 pm (240°)-9:15 am(27.7°)252,38810.2%
175:23 am (123°)2:36 pm (236°)-10:02 am(24.2°)252,4255.2%
186:24 am (126°)3:16 pm (233°)-10:51 am(21.9°)251,9481.8%
197:21 am (128°)4:04 pm (232°)-11:43 am(21.0°)251,0410.3%
208:13 am (128°)5:00 pm (233°)-12:35 pm(21.4°)249,7710.7%
218:57 am (125°)6:02 pm (236°)-1:27 pm(23.4°)248,1873.1%
229:33 am (121°)7:08 pm (241°)-2:17 pm(26.6°)246,3087.5%
2310:04 am (116°)8:14 pm (247°)-3:05 pm(31.0°)244,14813.7%
2410:31 am (109°)9:20 pm (255°)-3:51 pm(36.3°)241,70821.7%
2510:54 am (101°)10:27 pm (263°)-4:35 pm(42.3°)239,00931.1%
2611:17 am (93°)11:34 pm (271°)-5:20 pm(48.8°)236,10341.6%
2711:39 am (84°)--6:05 pm(55.5°)233,09552.9%
28-12:43 am (280°)12:04 pm (76°)6:53 pm(62.1°)230,15664.3%
29-1:56 am (289°)12:32 pm (68°)7:46 pm(68.1°)227,50775.2%
30-3:13 am (297°)1:06 pm (61°)8:43 pm(73.2°)225,41984.9%
31-4:32 am (303°)1:50 pm (55°)9:46 pm(76.7°)224,16992.7%
* All times are local time for Boulder. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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