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

Moon: 16.9%
Waxing Crescent
Current Time: Nov 13, 2026 at 9:02:41 am
Moon Direction: ↑ 110° East
Moon Altitude: -19.5°
Moon Distance: 252,042 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, May 2026

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2026 Moonrise/Moonset Meridian Passing
May Moonrise Moonset Moonrise Time Distance (mi) Illumination
1 - 5:35 am ↑ (245°) 8:25 pm ↑ (118°) 12:32 am (31.7°) 249,151 99.7%
2 - 6:04 am ↑ (240°) 9:28 pm ↑ (123°) 1:18 am (27.3°) 250,521 99.5%
3 - 6:39 am ↑ (235°) 10:28 pm ↑ (127°) 2:06 am (24.0°) 251,529 97.4%
4 - 7:20 am ↑ (233°) 11:25 pm ↑ (128°) 2:55 am (21.9°) 252,091 93.5%
5 - 8:09 am ↑ (232°) - 3:47 am (21.1°) 252,115 88.0%
6 12:14 am ↑ (127°) 9:04 am ↑ (233°) - 4:38 am (21.7°) 251,510 80.9%
7 12:56 am ↑ (125°) 10:04 am ↑ (236°) - 5:28 am (23.7°) 250,211 72.7%
8 1:32 am ↑ (121°) 11:08 am ↑ (241°) - 6:17 am (26.9°) 248,188 63.5%
9 2:02 am ↑ (115°) 12:13 pm ↑ (247°) - 7:03 am (31.2°) 245,466 53.5%
10 2:28 am ↑ (109°) 1:18 pm ↑ (255°) - 7:49 am (36.4°) 242,135 43.1%
11 2:52 am ↑ (101°) 2:25 pm ↑ (263°) - 8:33 am (42.4°) 238,362 32.7%
12 3:15 am ↑ (93°) 3:33 pm ↑ (271°) - 9:18 am (48.9°) 234,384 22.8%
13 3:38 am ↑ (84°) 4:44 pm ↑ (280°) - 10:05 am (55.7°) 230,508 13.9%
14 4:03 am ↑ (76°) 5:59 pm ↑ (289°) - 10:55 am (62.4°) 227,076 6.7%
15 4:33 am ↑ (67°) 7:19 pm ↑ (297°) - 11:49 am (68.5°) 224,433 2.0%
16 5:10 am ↑ (60°) 8:40 pm ↑ (303°) - 12:49 pm (73.6°) 222,863 0.2%
17 5:56 am ↑ (55°) 9:58 pm ↑ (307°) - 1:54 pm (76.8°) 222,536 1.7%
18 6:54 am ↑ (52°) 11:07 pm ↑ (307°) - 3:01 pm (77.8°) 223,466 6.5%
19 8:04 am ↑ (53°) - - 4:07 pm (76.5°) 225,499 14.0%
20 - 12:02 am ↑ (305°) 9:20 am ↑ (57°) 5:08 pm (73.3°) 228,361 23.5%
21 - 12:45 am ↑ (299°) 10:36 am ↑ (63°) 6:04 pm (68.5°) 231,725 34.3%
22 - 1:19 am ↑ (293°) 11:49 am ↑ (70°) 6:54 pm (62.9°) 235,281 45.5%
23 - 1:47 am ↑ (285°) 12:59 pm ↑ (78°) 7:40 pm (56.7°) 238,767 56.5%
24 - 2:10 am ↑ (277°) 2:05 pm ↑ (87°) 8:24 pm (50.5°) 241,994 66.9%
25 - 2:32 am ↑ (269°) 3:08 pm ↑ (95°) 9:06 pm (44.3°) 244,841 76.3%
26 - 2:53 am ↑ (262°) 4:11 pm ↑ (103°) 9:47 pm (38.5°) 247,247 84.3%
27 - 3:15 am ↑ (254°) 5:14 pm ↑ (110°) 10:30 pm (33.2°) 249,191 90.9%
28 - 3:39 am ↑ (247°) 6:17 pm ↑ (116°) 11:15 pm (28.6°) 250,678 95.7%
29 - 4:07 am ↑ (241°) 7:19 pm ↑ (122°) Moon does not pass the meridian on this day.
30 - 4:39 am ↑ (237°) 8:21 pm ↑ (126°) 12:02 am (25.0°) 251,723 98.7%
31 - 5:18 am ↑ (234°) 9:19 pm ↑ (128°) 12:51 am (22.5°) 252,332 99.8%
* 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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