StarsOutAlert me on good nights
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Istanbul
6.6
out of 10
Low confidence
Models disagree on tonight — actual conditions may be cloudier.
Peak 2h
6.921:00–23:00
Prime 21–01
6.721:00–01:00
Best this week
10.0Tue, Sep 8
Moon
Last Quarter
55% lit
Bright moon — reduces deep sky visibility
🔭 Moon up: 22:38–14:44
Full moon: Sep 26
Sky now
Clear · 0%
Measured at LTBA · 14km away · 12min ago
Sun ↓ 19:34·Dark from 20:34·76% clouds
🔭
Moon visible today
06:33 – 11:50 · 55% lit · great for telescope viewing
Next great night
Friday — 8.1
✨ Great night tonight
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.