Sunrise and Sunsetat Flathead Lake
September 2025
Sunrise
7:55 AM
Sunset
9:17 PM
On 1 September, the sun rises at 7:55 AM and sets at 9:17 PM.
The sun is 13 hours 21 minutes above the horizon (the length of the day).
Astronomical dawn (first rays of light) begins at 6:02 AM and at 11:09 PM it is completely dark (the end of astronomical twilight).
The sun is 13 hours 21 minutes above the horizon (the length of the day).
Astronomical dawn (first rays of light) begins at 6:02 AM and at 11:09 PM it is completely dark (the end of astronomical twilight).
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| 1 September 2025, Monday | 7:55 AM | 9:17 PM | 13h 21m |
| 2 September 2025, Tuesday | 7:56 AM | 9:15 PM | 13h 18m |
| 3 September 2025, Wednesday | 7:58 AM | 9:13 PM | 13h 14m |
| 4 September 2025, Thursday | 7:59 AM | 9:11 PM | 13h 11m |
| 5 September 2025, Friday | 8:00 AM | 9:08 PM | 13h 08m |
| 6 September 2025, Saturday | 8:02 AM | 9:06 PM | 13h 04m |
| 7 September 2025, Sunday | 8:03 AM | 9:04 PM | 13h 01m |
| 8 September 2025, Monday | 8:04 AM | 9:02 PM | 12h 57m |
| 9 September 2025, Tuesday | 8:06 AM | 9:00 PM | 12h 54m |
| 10 September 2025, Wednesday | 8:07 AM | 8:58 PM | 12h 51m |
| 11 September 2025, Thursday | 8:08 AM | 8:56 PM | 12h 47m |
| 12 September 2025, Friday | 8:10 AM | 8:54 PM | 12h 44m |
| 13 September 2025, Saturday | 8:11 AM | 8:52 PM | 12h 40m |
| 14 September 2025, Sunday | 8:13 AM | 8:50 PM | 12h 37m |
| 15 September 2025, Monday | 8:14 AM | 8:48 PM | 12h 34m |
| 16 September 2025, Tuesday | 8:15 AM | 8:46 PM | 12h 30m |
| 17 September 2025, Wednesday | 8:17 AM | 8:44 PM | 12h 27m |
| 18 September 2025, Thursday | 8:18 AM | 8:42 PM | 12h 23m |
| 19 September 2025, Friday | 8:19 AM | 8:40 PM | 12h 20m |
| 20 September 2025, Saturday | 8:21 AM | 8:38 PM | 12h 16m |
| 21 September 2025, Sunday | 8:22 AM | 8:35 PM | 12h 13m |
| 22 September 2025, Monday | 8:23 AM | 8:33 PM | 12h 09m |
| 23 September 2025, Tuesday | 8:25 AM | 8:31 PM | 12h 06m |
| 24 September 2025, Wednesday | 8:26 AM | 8:29 PM | 12h 03m |
| 25 September 2025, Thursday | 8:28 AM | 8:27 PM | 11h 59m |
| 26 September 2025, Friday | 8:29 AM | 8:25 PM | 11h 56m |
| 27 September 2025, Saturday | 8:30 AM | 8:23 PM | 11h 52m |
| 28 September 2025, Sunday | 8:32 AM | 8:21 PM | 11h 49m |
| 29 September 2025, Monday | 8:33 AM | 8:19 PM | 11h 45m |
| 30 September 2025, Tuesday | 8:35 AM | 8:17 PM | 11h 42m |