Sunrise and sunset times in Thermopolis
43.646° N, 108.212° W · times in America/Denver
On Saturday 19 September 2026 the sun rises in Thermopolis at 6:57 am and sets at 7:15 pm, giving 12 h 18 m of daylight. Solar noon is at 1:06 pm. Civil twilight begins at 6:27 am and ends at 7:44 pm. Tonight the moon is a waxing gibbous, 58% illuminated.
Today, Saturday 19 September 2026
Sun
- Sunrise
- 6:57 am
- Sunset
- 7:15 pm
- Solar noon
- 1:06 pm
- Daylight
- 12 h 18 m
- Civil dawn
- 6:27 am
- Civil dusk
- 7:44 pm
- Nautical dawn
- 5:54 am
- Nautical dusk
- 8:17 pm
- First light
- 5:19 am
- Last light
- 8:52 pm
- Golden hour, morning
- 6:38 am to 7:33 am
- Golden hour, evening
- 6:38 pm to 7:33 pm
- Blue hour, morning
- 6:27 am to 6:38 am
- Blue hour, evening
- 7:33 pm to 7:44 pm
Golden hour and blue hour are photographers' conventions, not astronomical definitions: golden hour is the sun between 4° below and 6° above the horizon, blue hour the sun between 6° and 4° below.
Moon
- Moonrise
- 3:53 pm
- Phase
- Waxing gibbous
- Illumination
- 58% illuminated
No moonset today.
The year as a wall almanac
Every day of 2026 in Thermopolis on one printed sheet: sunrise, sunset and moon times, computed for these exact coordinates.
Seasons of 2026
| Event | Date | Local time |
|---|---|---|
| March equinox | 20 March | 8:37 am |
| June solstice | 21 June | 2:20 am |
| September equinox | 22 September | 6:09 pm |
| December solstice | 21 December | 1:49 pm |
Month by month
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:43 am | 5:01 pm | 9 h 18 m |
| February | 7:11 am | 5:43 pm | 10 h 31 m |
| March | 7:24 am | 7:19 pm | 11 h 54 m |
| April | 6:30 am | 7:56 pm | 13 h 26 m |
| May | 5:47 am | 8:31 pm | 14 h 43 m |
| June | 5:31 am | 8:55 pm | 15 h 24 m |
| July | 5:45 am | 8:51 pm | 15 h 06 m |
| August | 6:17 am | 8:15 pm | 13 h 58 m |
| September | 6:52 am | 7:22 pm | 12 h 29 m |
| October | 7:27 am | 6:28 pm | 11 h 01 m |
| November | 7:07 am | 4:47 pm | 9 h 39 m |
| December | 7:39 am | 4:36 pm | 8 h 56 m |
Values for the 15th of each month, local wall-clock time, daylight-saving shifts included.
Sunrise and sunset for the next seven days
| Date | Sunrise | Sunset | Daylight | Moonrise | Moonset |
|---|---|---|---|---|---|
| Sunday 20 September | 6:58 am | 7:13 pm | 12 h 15 m | 4:31 pm | 12:17 am |
| Monday 21 September | 6:59 am | 7:11 pm | 12 h 12 m | 5:02 pm | 1:21 am |
| Tuesday 22 September | 7:00 am | 7:09 pm | 12 h 09 m | 5:28 pm | 2:27 am |
| Wednesday 23 September | 7:01 am | 7:07 pm | 12 h 06 m | 5:51 pm | 3:35 am |
| Thursday 24 September | 7:02 am | 7:06 pm | 12 h 03 m | 6:11 pm | 4:44 am |
| Friday 25 September | 7:03 am | 7:04 pm | 12 h 00 m | 6:30 pm | 5:53 am |
| Saturday 26 September | 7:05 am | 7:02 pm | 11 h 57 m | 6:50 pm | 7:04 am |
Longest and shortest day of 2026
- Longest day: 21 June, with 15 h 26 m of daylight.
- Shortest day: 21 December, with 8 h 55 m of daylight.
- Earliest sunrise: 5:31 am on 15 June.
- Latest sunset: 8:58 pm on 26 June.
Moon phases ahead
| Phase | Date | Local time |
|---|---|---|
| Full moon | 26 September | 10:48 am |
| Last quarter | 3 October | 7:25 am |
| New moon | 10 October | 9:49 am |
| First quarter | 18 October | 10:12 am |
Questions about sunrise and sunset in Thermopolis
What time does the sun rise in Thermopolis today?
The sun rises in Thermopolis at 6:57 am today, Saturday 19 September 2026.
What time is sunset in Thermopolis today?
The sun sets in Thermopolis at 7:15 pm today, Saturday 19 September 2026.
How many hours of daylight does Thermopolis have today?
Thermopolis has 12 h 18 m of daylight today, from sunrise at 6:57 am to sunset at 7:15 pm.
When is golden hour in Thermopolis today?
Golden hour in Thermopolis is 6:38 am to 7:33 am in the morning and 6:38 pm to 7:33 pm in the evening today. Blue hour is 6:27 am to 6:38 am and 7:33 pm to 7:44 pm.
When are the longest and shortest days of the year in Thermopolis?
In 2026 the longest day in Thermopolis is 21 June, with 15 h 26 m of daylight. The shortest is 21 December, with 8 h 55 m.
What is the moon phase tonight in Thermopolis?
Tonight the moon is a waxing gibbous, 58% illuminated. The next full moon is on 26 September.
When does it get dark in Thermopolis?
Civil twilight ends at 7:44 pm. Nautical twilight ends at 8:17 pm, and the sky is fully dark after astronomical dusk at 8:52 pm.
What time zone is Thermopolis in?
Thermopolis keeps America/Denver time. Every time on this page is local wall-clock time, with daylight saving changes included.
Can I get a printed sunrise and sunset calendar for Thermopolis?
Yes. Sunrise at My House prints a wall almanac with every day of 2026 for Thermopolis: sunrise, sunset and moon times computed for these coordinates.
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