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Boulder, Colorado, USA — Moonrise, Moonset, and Moon Phases, September 2026

Moon: 17.2%
Waxing Crescent
Current Time: Nov 13, 2026 at 10:04:13 am
Moon Direction: ↑ 118° Southeast
Moon Altitude: -9.1°
Moon Distance: 252,044 mi
Next Full Moon: Nov 24, 2026, 7:53 am
Next New Moon: Dec 8, 2026, 5:51 pm
Next Moonrise: Today, 10:56 am

Moonrise, Moonset, and Phase Calendar for Boulder, September 2026

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2026 Moonrise/Moonset Meridian Passing
Sep Moonrise Moonset Moonrise Time Distance (mi) Illumination
1 - 11:25 am ↑ (293°) 9:34 pm ↑ (64°) 4:08 am (65.8°) 234,035 80.6%
2 - 12:38 pm ↑ (300°) 10:11 pm ↑ (58°) 5:00 am (71.1°) 232,444 70.7%
3 - 1:53 pm ↑ (305°) 10:57 pm ↑ (54°) 5:57 am (75.1°) 231,081 59.5%
4 - 3:03 pm ↑ (308°) 11:54 pm ↑ (52°) 6:58 am (77.4°) 229,979 47.7%
5 - 4:04 pm ↑ (307°) - 8:00 am (77.8°) 229,201 35.8%
6 1:02 am ↑ (54°) 4:55 pm ↑ (304°) - 9:03 am (76.1°) 228,839 24.7%
7 2:17 am ↑ (58°) 5:36 pm ↑ (298°) - 10:03 am (72.5°) 228,995 15.1%
8 3:34 am ↑ (64°) 6:09 pm ↑ (291°) - 10:58 am (67.5°) 229,753 7.5%
9 4:50 am ↑ (72°) 6:37 pm ↑ (283°) - 11:50 am (61.4°) 231,158 2.5%
10 6:02 am ↑ (81°) 7:02 pm ↑ (275°) - 12:38 pm (54.8°) 233,185 0.2%
11 7:12 am ↑ (90°) 7:25 pm ↑ (266°) - 1:24 pm (48.1°) 235,739 0.6%
12 8:20 am ↑ (98°) 7:48 pm ↑ (258°) - 2:09 pm (41.6°) 238,653 3.5%
13 9:27 am ↑ (106°) 8:12 pm ↑ (250°) - 2:54 pm (35.7°) 241,710 8.5%
14 10:34 am ↑ (114°) 8:40 pm ↑ (244°) - 3:41 pm (30.5°) 244,667 15.3%
15 11:40 am ↑ (120°) 9:11 pm ↑ (238°) - 4:28 pm (26.3°) 247,280 23.4%
16 12:43 pm ↑ (124°) 9:48 pm ↑ (234°) - 5:18 pm (23.2°) 249,336 32.5%
17 1:44 pm ↑ (127°) 10:32 pm ↑ (232°) - 6:09 pm (21.5°) 250,667 42.0%
18 2:38 pm ↑ (128°) 11:23 pm ↑ (232°) - 7:00 pm (21.2°) 251,168 51.8%
19 3:25 pm ↑ (127°) - - 7:51 pm (22.2°) 250,808 61.5%
20 - 12:20 am ↑ (234°) 4:05 pm ↑ (124°) 8:41 pm (24.6°) 249,626 70.9%
21 - 1:22 am ↑ (238°) 4:39 pm ↑ (119°) 9:29 pm (28.1°) 247,733 79.5%
22 - 2:26 am ↑ (243°) 5:08 pm ↑ (113°) 10:15 pm (32.8°) 245,294 87.0%
23 - 3:31 am ↑ (250°) 5:33 pm ↑ (106°) 11:00 pm (38.2°) 242,516 93.2%
24 - 4:36 am ↑ (257°) 5:56 pm ↑ (99°) 11:44 pm (44.3°) 239,627 97.5%
25 - 5:42 am ↑ (265°) 6:19 pm ↑ (90°) Moon does not pass the meridian on this day.
26 - 6:49 am ↑ (274°) 6:42 pm ↑ (82°) 12:28 am (50.8°) 236,849 99.7%
27 - 7:59 am ↑ (282°) 7:07 pm ↑ (74°) 1:14 am (57.4°) 234,377 99.5%
28 - 9:11 am ↑ (291°) 7:36 pm ↑ (66°) 2:03 am (63.7°) 232,358 96.6%
29 - 10:26 am ↑ (298°) 8:11 pm ↑ (60°) 2:55 am (69.3°) 230,873 91.1%
30 - 11:42 am ↑ (304°) 8:55 pm ↑ (55°) 3:51 am (73.9°) 229,941 83.2%
* All times are local time for Boulder. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar. Illumination is calculated at lunar noon.

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