StarsOut
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Leiden
6.6
out of 10
Clouds
57%
Moon
Waning Crescent
2% lit
Moon below horizon — perfect darkness
Best window
02:00 – 04:00
Sun ↓ 20:39·Dark from 21:39
Alert me on good nightsNext great night
Friday — 7.9
✨ Great night tonight
Sky quality tonight
Best: 02:00–04:00This week’s nights
Europe/AmsterdamHow the score works
60% weight
Cloud cover
Layer-weighted across the best 2-hour window of the night. Low clouds block everything, thin high cirrus still lets bright stars through.
40% weight
Moon darkness
A new moon boosts the score. A full moon near midnight washes out all but the brightest stars. We ease the penalty after midnight when the moon is setting.