Sunrise and sunset times in Longmont, CO
Check out today's and tomorrow's sunrise and sunset times in Longmont, CO, United States, as well as the whole calendar for May 2025.
Today
May 17, 2025 . Current time: 10:54:44 pm
First light at 5:11:19 am
Sunrise time: 5:40:48 am
Sunset time: 8:12:52 pm
Last light at 8:42:20 pm
Day length: 14 hours, 32 minutes
Sunset in Longmont was 2 hours, 41 minutes ago
Moon set on May 17 at 08:20 AM
Moon will rise on May 18 at 12:00 AMMoon phase: 🌖 Waning Gibbous (73%)Tomorrow
May 18, 2025
First light at 5:10:23 am
Sunrise time: 5:39:57 am
Sunset time: 8:13:48 pm
Last light at 8:43:21 pm
Day length: 14 hours, 33 minutes
Tomorrow will be approximately 2 minutes longer than today in Longmont
Moon will rise on May 18 at 12:01 AM Moon will set on May 18 at 09:28 AMMoon phase: 🌖 Waning Gibbous (63%)
- Longmont, Colorado
- Latitude: 40.167206
- Longitude: -105.101929
- Time zone: Mountain Time MDT
Shortest day in Longmont, CO
The shortest day of the year will be in around 7 months, during the winter solstice on December 21, 2025, with a daylight length of 9 hours and 21 minutes.Longest day in Longmont, CO
The longest day of the year will be in 1 month and 1 day, during the summer solstice on June 20, 2025, with a daylight length of 15 hours and 5 minutes.
May 2025 - Longmont, Colorado - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of May in Longmont.
The day length increases by 53 minutes over the course of May 2025 in Longmont, CO - from 13 hours, 59 minutes on the first day to 14 hours, 53 minutes on the last day.
| Day | Twilight Start | Sunrise | Sunset | Twilight End | Day Length | Day Length Variation | Solar Noon
Time of day when the sun reaches its highest point in the sky.
|
Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night Length
Calculated form this day's sunset to the next day's sunrise.
|
Moon phase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thu, May 1 | 5:29:47 am | 5:57:47 am | 7:57:06 pm | 8:25:06 pm | 13h 59m 19s | 13h 59m 19s | 12:57:26 pm | 55.5° | 4:53:51 am | 9:01:02 pm | 4:15:04 am | 9:39:49 pm | 9h 59m 27s | 🌒 (17%) |
| Fri, May 2 | 5:28:28 am | 5:56:33 am | 7:58:07 pm | 8:26:12 pm | 14h 1m 34s | 2m 15s | 12:57:20 pm | 55.8° | 4:52:23 am | 9:02:17 pm | 4:13:21 am | 9:41:19 pm | 9h 57m 13s | 🌒 (26%) |
| Sat, May 3 | 5:27:10 am | 5:55:20 am | 7:59:08 pm | 8:27:18 pm | 14h 3m 48s | 2m 14s | 12:57:14 pm | 56.1° | 4:50:55 am | 9:03:33 pm | 4:11:39 am | 9:42:49 pm | 9h 55m 1s | 🌒 (36%) |
| Sun, May 4 | 5:25:53 am | 5:54:09 am | 8:00:09 pm | 8:28:25 pm | 14h 6m 0s | 2m 12s | 12:57:09 pm | 56.4° | 4:49:29 am | 9:04:48 pm | 4:09:58 am | 9:44:19 pm | 9h 52m 49s | 🌓 (46%) |
| Mon, May 5 | 5:24:37 am | 5:52:58 am | 8:01:09 pm | 8:29:31 pm | 14h 8m 11s | 2m 11s | 12:57:04 pm | 56.7° | 4:48:04 am | 9:06:04 pm | 4:08:18 am | 9:45:50 pm | 9h 50m 40s | 🌔 (57%) |
| Tue, May 6 | 5:23:22 am | 5:51:49 am | 8:02:10 pm | 8:30:36 pm | 14h 10m 21s | 2m 10s | 12:56:59 pm | 56.9° | 4:46:40 am | 9:07:19 pm | 4:06:39 am | 9:47:20 pm | 9h 48m 32s | 🌔 (66%) |
| Wed, May 7 | 5:22:09 am | 5:50:42 am | 8:03:10 pm | 8:31:42 pm | 14h 12m 28s | 2m 7s | 12:56:56 pm | 57.2° | 4:45:17 am | 9:08:35 pm | 4:05:01 am | 9:48:51 pm | 9h 46m 26s | 🌔 (75%) |
| Thu, May 8 | 5:20:58 am | 5:49:36 am | 8:04:10 pm | 8:32:48 pm | 14h 14m 34s | 2m 6s | 12:56:53 pm | 57.5° | 4:43:56 am | 9:09:50 pm | 4:03:24 am | 9:50:21 pm | 9h 44m 21s | 🌔 (83%) |
| Fri, May 9 | 5:19:47 am | 5:48:31 am | 8:05:09 pm | 8:33:53 pm | 14h 16m 38s | 2m 4s | 12:56:50 pm | 57.7° | 4:42:35 am | 9:11:04 pm | 4:01:48 am | 9:51:52 pm | 9h 42m 19s | 🌔 (90%) |
| Sat, May 10 | 5:18:38 am | 5:47:28 am | 8:06:08 pm | 8:34:58 pm | 14h 18m 40s | 2m 2s | 12:56:48 pm | 58° | 4:41:17 am | 9:12:19 pm | 4:00:14 am | 9:53:22 pm | 9h 40m 18s | 🌔 (95%) |
| Sun, May 11 | 5:17:31 am | 5:46:26 am | 8:07:07 pm | 8:36:02 pm | 14h 20m 41s | 2m 1s | 12:56:47 pm | 58.3° | 4:40:00 am | 9:13:33 pm | 3:58:41 am | 9:54:52 pm | 9h 38m 18s | 🌔 (98%) |
| Mon, May 12 | 5:16:25 am | 5:45:25 am | 8:08:06 pm | 8:37:06 pm | 14h 22m 41s | 2m 0s | 12:56:46 pm | 58.5° | 4:38:44 am | 9:14:47 pm | 3:57:09 am | 9:56:22 pm | 9h 36m 21s | 🌕 (100%) |
| Tue, May 13 | 5:15:21 am | 5:44:27 am | 8:09:04 pm | 8:38:10 pm | 14h 24m 37s | 1m 56s | 12:56:45 pm | 58.8° | 4:37:30 am | 9:16:01 pm | 3:55:39 am | 9:57:52 pm | 9h 34m 25s | 🌖 (100%) |
| Wed, May 14 | 5:14:18 am | 5:43:29 am | 8:10:02 pm | 8:39:13 pm | 14h 26m 33s | 1m 56s | 12:56:46 pm | 59° | 4:36:17 am | 9:17:14 pm | 3:54:10 am | 9:59:21 pm | 9h 32m 32s | 🌖 (98%) |
| Thu, May 15 | 5:13:17 am | 5:42:34 am | 8:10:59 pm | 8:40:16 pm | 14h 28m 25s | 1m 52s | 12:56:46 pm | 59.2° | 4:35:06 am | 9:18:27 pm | 3:52:43 am | 10:00:50 pm | 9h 30m 41s | 🌖 (94%) |
| Fri, May 16 | 5:12:17 am | 5:41:40 am | 8:11:56 pm | 8:41:18 pm | 14h 30m 16s | 1m 51s | 12:56:48 pm | 59.5° | 4:33:57 am | 9:19:39 pm | 3:51:18 am | 10:02:18 pm | 9h 28m 52s | 🌖 (89%) |
| Sat, May 17 | 5:11:19 am | 5:40:48 am | 8:12:52 pm | 8:42:20 pm | 14h 32m 4s | 1m 48s | 12:56:50 pm | 59.7° | 4:32:50 am | 9:20:50 pm | 3:49:54 am | 10:03:46 pm | 9h 27m 5s | 🌖 (81%) |
| Sun, May 18 | 5:10:23 am | 5:39:57 am | 8:13:48 pm | 8:43:21 pm | 14h 33m 51s | 1m 47s | 12:56:52 pm | 59.9° | 4:31:44 am | 9:22:01 pm | 3:48:32 am | 10:05:13 pm | 9h 25m 20s | 🌖 (73%) |
| Mon, May 19 | 5:09:29 am | 5:39:08 am | 8:14:43 pm | 8:44:22 pm | 14h 35m 35s | 1m 44s | 12:56:55 pm | 60.1° | 4:30:40 am | 9:23:11 pm | 3:47:12 am | 10:06:39 pm | 9h 23m 38s | 🌖 (63%) |
| Tue, May 20 | 5:08:36 am | 5:38:21 am | 8:15:37 pm | 8:45:21 pm | 14h 37m 16s | 1m 41s | 12:56:59 pm | 60.3° | 4:29:38 am | 9:24:20 pm | 3:45:53 am | 10:08:05 pm | 9h 21m 58s | 🌗 (53%) |
| Wed, May 21 | 5:07:46 am | 5:37:35 am | 8:16:31 pm | 8:46:21 pm | 14h 38m 56s | 1m 40s | 12:57:03 pm | 60.5° | 4:28:38 am | 9:25:29 pm | 3:44:37 am | 10:09:29 pm | 9h 20m 21s | 🌘 (42%) |
| Thu, May 22 | 5:06:57 am | 5:36:52 am | 8:17:24 pm | 8:47:19 pm | 14h 40m 32s | 1m 36s | 12:57:08 pm | 60.7° | 4:27:39 am | 9:26:36 pm | 3:43:23 am | 10:10:53 pm | 9h 18m 46s | 🌘 (31%) |
| Fri, May 23 | 5:06:10 am | 5:36:10 am | 8:18:16 pm | 8:48:16 pm | 14h 42m 6s | 1m 34s | 12:57:13 pm | 60.9° | 4:26:43 am | 9:27:43 pm | 3:42:11 am | 10:12:15 pm | 9h 17m 14s | 🌘 (21%) |
| Sat, May 24 | 5:05:25 am | 5:35:30 am | 8:19:08 pm | 8:49:13 pm | 14h 43m 38s | 1m 32s | 12:57:19 pm | 61.1° | 4:25:49 am | 9:28:48 pm | 3:41:01 am | 10:13:37 pm | 9h 15m 43s | 🌘 (12%) |
| Sun, May 25 | 5:04:41 am | 5:34:51 am | 8:19:58 pm | 8:50:08 pm | 14h 45m 7s | 1m 29s | 12:57:25 pm | 61.3° | 4:24:57 am | 9:29:53 pm | 3:39:53 am | 10:14:57 pm | 9h 14m 17s | 🌘 (5%) |
| Mon, May 26 | 5:04:00 am | 5:34:15 am | 8:20:48 pm | 8:51:03 pm | 14h 46m 33s | 1m 26s | 12:57:31 pm | 61.4° | 4:24:07 am | 9:30:56 pm | 3:38:47 am | 10:16:15 pm | 9h 12m 52s | 🌘 (1%) |
| Tue, May 27 | 5:03:21 am | 5:33:40 am | 8:21:37 pm | 8:51:56 pm | 14h 47m 57s | 1m 24s | 12:57:39 pm | 61.6° | 4:23:19 am | 9:31:58 pm | 3:37:44 am | 10:17:33 pm | 9h 11m 31s | 🌑 (0%) |
| Wed, May 28 | 5:02:43 am | 5:33:08 am | 8:22:25 pm | 8:52:49 pm | 14h 49m 17s | 1m 20s | 12:57:46 pm | 61.8° | 4:22:33 am | 9:32:59 pm | 3:36:44 am | 10:18:49 pm | 9h 10m 12s | 🌒 (2%) |
| Thu, May 29 | 5:02:08 am | 5:32:37 am | 8:23:12 pm | 8:53:40 pm | 14h 50m 35s | 1m 18s | 12:57:54 pm | 61.9° | 4:21:50 am | 9:33:59 pm | 3:35:46 am | 10:20:03 pm | 9h 8m 56s | 🌒 (6%) |
| Fri, May 30 | 5:01:35 am | 5:32:08 am | 8:23:57 pm | 8:54:30 pm | 14h 51m 49s | 1m 14s | 12:58:03 pm | 62.1° | 4:21:09 am | 9:34:57 pm | 3:34:50 am | 10:21:15 pm | 9h 7m 44s | 🌒 (13%) |
| Sat, May 31 | 5:01:04 am | 5:31:41 am | 8:24:42 pm | 8:55:19 pm | 14h 53m 1s | 1m 12s | 12:58:12 pm | 62.2° | 4:20:30 am | 9:35:53 pm | 3:33:58 am | 10:22:26 pm | 9h 6m 34s | 🌒 (22%) |
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Sunrise and Sunset photos in Longmont, CO
Enjoy this beautiful gallery of images of the sunset and sunrise at Longmont, CO. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Longmont, CO - 2025
The followin graph shows sunrise and sunset times in Longmont, CO for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Longmont, CO.