StarsOut
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Sydney
6.5
out of 10
Peak 2h
8.104:00–06:00
Prime 21–01
6.321:00–01:00
Best this week
9.0Mon, Jul 20
Moon
Waxing Crescent
5% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 08:20–19:10
📍 NE · 26°
Full moon: Jul 29
Sun ↓ 17:04·Dark from 18:04·87% clouds
Alert me on good nightsNext great night
Friday — 8.6
✨ Great night tonight
Sky quality tonight
Best: 04:00–06:00This week’s nights
Australia/SydneyHow 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.