Astronomical observations Grayslake (United States)
| Sunrise | 06 h 30 am |
|---|---|
| Transition hour | 11 h 35 am |
| Sunset | 04 h 40 pm |
| Starting of civil twilight | 06 h 01 am |
| Termination of civil twilight | 05 h 10 pm |
| Duration of sunshine | 10 h 10 |
| Sunrise | 03 h 43 am |
|---|---|
| Sunset | 03 h 44 pm |
| Fraction illuminated | 14 % (premier croissant) |