Galactic core · next 30 nights

Milky Way windows at Hanle (Indian Astronomical Observatory)

This tracks the Sagittarius galactic core only when the Sun is at least 18° below the horizon and the core is at least 10° high. It is geometry, not a weather promise.

Best night11 Oct1.0 h of core visibility in darkness

Highest core altitude17°near 19:20

Usable nights19 / 30Moonlight and cloud still decide image contrast.

Computed local geometry

Core hours after astronomical twilight

11 Oct1.0 h2% moon

12 Oct1.0 h5% moon

13 Oct1.0 h11% moon

14 Oct1.0 h17% moon

15 Oct0.7 h25% moon

16 Oct0.7 h33% moon

17 Oct0.7 h42% moon

18 Oct0.7 h52% moon

19 Oct1.0 h61% moon

20 Oct0.7 h70% moon

21 Oct0.7 h79% moon

22 Oct0.7 h87% moon

23 Oct0.7 h93% moon

24 Oct0.7 h97% moon

25 Oct0.3 h100% moon

26 Oct0.3 h99% moon

27 Oct0.3 h97% moon

28 Oct0.3 h92% moon

29 Oct0.3 h84% moon

30 Octnone74% moon

31 Octnone64% moon

1 Novnone52% moon

2 Novnone40% moon

3 Novnone30% moon

4 Novnone20% moon

5 Novnone12% moon

6 Novnone6% moon

7 Novnone2% moon

8 Novnone0% moon

9 Novnone1% moon

19:20–20:20

This is the widest geometric window in the next month. Check the live forecast before travelling, then favor the darkest moonless portion. Check live cloud and transparency →

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Same coordinates, different question

Moon

Moonless nights

Find the longest uninterrupted dark windows.

Core

Milky Way

See when the galactic core clears the horizon after dark.

−18°

Astronomical darkness

Track true darkness, including polar twilight.