GoodSeeing
Galactic core · next 30 nights

Milky Way windows at Reno

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 Sept1.3 h of core visibility in darkness
Highest core altitude17°near 20:40
Usable nights29 / 30Moonlight and cloud still decide image contrast.
Computed local geometry

Core hours after astronomical twilight

18 Sept1.3 h54% moon
19 Sept1.3 h64% moon
20 Sept1.3 h72% moon
21 Sept1.0 h81% moon
22 Sept1.0 h88% moon
23 Sept1.0 h93% moon
24 Sept1.0 h98% moon
25 Sept1.0 h100% moon
26 Sept0.7 h100% moon
27 Sept1.0 h97% moon
28 Sept1.0 h92% moon
29 Sept1.0 h85% moon
30 Sept1.0 h76% moon
1 Oct0.7 h65% moon
2 Oct0.7 h54% moon
3 Oct0.7 h42% moon
4 Oct0.7 h30% moon
5 Oct0.7 h20% moon
6 Oct0.3 h12% moon
7 Oct0.3 h6% moon
8 Oct0.3 h2% moon
9 Oct0.7 h0% moon
10 Oct0.7 h1% moon
11 Oct0.7 h3% moon
12 Oct0.3 h8% moon
13 Oct0.3 h14% moon
14 Oct0.3 h21% moon
15 Oct0.3 h29% moon
16 Oct0.3 h38% moon
17 Octnone47% moon
20:40–22:00

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 →

Keep planning

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.