StarsOutAlert me on good nights
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Okinawa
4.0
out of 10
Peak 2h
5.800:00–02:00
Prime 21–01
4.521:00–01:00
Best this week
6.6Sun, Jun 7
Moon
Waning Gibbous
93% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:19–06:37
📍 SW · 10°
Full moon: Jun 29
Sky now
Overcast · 100%
Measured at ROTM · 9km away · 10min ago
Sun ↓ 19:17·Dark from 20:17·82% clouds
🔭
Moon visible today
05:36 – 08:15 · 93% lit · great for telescope viewing
Sky quality tonight
Best: 00:00–02:00This week’s nights
Asia/TokyoHow 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.