Astronomical observations Great Falls (United States)
| Sunrise | 06 h 57 am |
|---|---|
| Transition hour | 01 h 01 pm |
| Sunset | 07 h 06 pm |
| Starting of civil twilight | 06 h 30 am |
| Termination of civil twilight | 07 h 33 pm |
| Duration of sunshine | 12 h 09 |
| Sunrise | 04 h 12 pm |
|---|---|
| Sunset | 01 h 32 am |
| Fraction illuminated | 84 % (dernier croissant) |