StarsOutAlert me on good nights
Should you go outside tonight?
Might be worth a look
Partial clearing expected. Keep an eye out.
Shanghai
4.9
out of 10
Peak 2h
7.300:00–02:00
Prime 21–01
4.921:00–01:00
Best this week
9.3Sun, Sep 6
Moon
Waning Gibbous
84% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 19:51–09:18
📍 E · 15°
Full moon: Sep 26
Sky now
Mostly cloudy · 75%
Measured at ZSSS · 13km away · 6min ago
Sun ↓ 18:19·Dark from 19:19·66% clouds
🔭
Moon visible today
05:29 – 09:24 · 84% lit · great for telescope viewing
Next great night
Thursday — 8.6
✨ Great night tonight
Sky quality tonight
Best: 00:00–02:00This week’s nights
Asia/ShanghaiHow 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.