StarsOutAlert me on good nights
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Hong Kong
3.6
out of 10
Peak 2h
5.802:00–04:00
Prime 21–01
3.721:00–01:00
Best this week
7.0Wed, Sep 2
Moon
Waning Gibbous
84% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 19:55–08:38
📍 W · 14°
Full moon: Sep 26
Sun ↓ 18:41·Dark from 19:41·99% clouds
🔭
Moon visible today
06:05 – 09:24 · 84% lit · great for telescope viewing
Next great night
Wednesday — 7.0
🌙 Good night ahead
Sky quality tonight
Best: 02:00–04:00This week’s nights
Asia/Hong KongHow 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.