Galactic core · next 30 nights

Milky Way windows at Anchorage

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 night18 Sept0.0 h of core visibility in darkness

Highest core altitude0°near 23:00

Usable nights0 / 30Moonlight and cloud still decide image contrast.

Computed local geometry

Core hours after astronomical twilight

18 Septnone55% moon

19 Septnone64% moon

20 Septnone73% moon

21 Septnone81% moon

22 Septnone88% moon

23 Septnone94% moon

24 Septnone98% moon

25 Septnone100% moon

26 Septnone100% moon

27 Septnone97% moon

28 Septnone92% moon

29 Septnone85% moon

30 Septnone75% moon

1 Octnone65% moon

2 Octnone53% moon

3 Octnone41% moon

4 Octnone30% moon

5 Octnone20% moon

6 Octnone12% moon

7 Octnone5% moon

8 Octnone2% moon

9 Octnone0% moon

10 Octnone1% moon

11 Octnone4% moon

12 Octnone8% moon

13 Octnone14% moon

14 Octnone21% moon

15 Octnone29% moon

16 Octnone38% moon

17 Octnone47% moon

No dark core window

At this location and season, the core does not reach 10° during astronomical darkness in the next 30 nights. 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.