StarsOutAlert me on good nights
Should you go outside tonight?
Not worth it tonight
Clouds will block the view. Stay inside.
Haarlem
1.3
out of 10
Peak 2h
4.702:00–04:00
Prime 21–01
1.821:00–01:00
Best this week
8.5Sun, Jun 7
Moon
Waning Gibbous
98% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 22:51–05:20
📍 S · 9°
Sky now
Clear · 0%
Measured at EHAM · 13km away · 25min ago
Sun ↓ 21:53·Dark from 22:53·100% clouds
🔭
Moon visible today
18:56 – 21:53 · 98% lit · great for telescope viewing
Next great night
Friday — 7.5
🌙 Good night ahead
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.