StarsOut
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Arnhem
4.0
out of 10
Clouds
100%
Moon
Waning Crescent
2% lit
Moon below horizon — perfect darkness
Best window
00:00 – 02:00
Sun ↓ 20:33·Dark from 21:33
Alert me on good nightsNext great night
Saturday — 9.3
🌌 Drop everything — go outside
Sky quality tonight
Best: 00:00–02:00This 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.