StarsOutAlert me on good nights
Should you go outside tonight?
Might be worth a look
Partial clearing expected. Keep an eye out.
Busan
5.1
out of 10
Peak 2h
6.802:00–04:00
Prime 21–01
5.121:00–01:00
Best this week
8.3Sat, Sep 5
Moon
Waning Gibbous
91% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 19:48–08:46
Full moon: Sep 26
Sun ↓ 18:54·Dark from 19:54·25% clouds
🔭
Moon visible today
05:55 – 08:35 · 91% lit · great for telescope viewing
Next great night
Wednesday — 8.1
✨ Great night tonight
Sky quality tonight
Best: 02:00–04:00This week’s nights
Asia/SeoulHow 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.