StarsOutAlert me on good nights
Should you go outside tonight?
Great night tonight
Clear skies and dark conditions. Go outside.
Istanbul
8.1
out of 10
Peak 2h
8.521:00–23:00
Prime 21–01
8.421:00–01:00
Best this week
10.0Wed, Jun 10
Moon
Waning Gibbous
70% lit
Bright moon — reduces deep sky visibility
🔭 Moon up: 00:26–10:44
Full moon: Jun 29
Sun ↓ 20:32·Dark from 21:32·23% clouds
🔭
Moon visible today
05:32 – 10:41 · 70% lit · great for telescope viewing
Sky quality tonight
Best: 21:00–23:00This week’s nights
Europe/IstanbulHow 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.