Thursday 2026-09-17

Badlands National Park

Interior, SD

48 Poor conditions. Moon down after 10:10pm, 100% cloud.

Astronomical darkness 8:35pm–4:55am (8.32h) · best window 10:10pm–4:55am

Milky Way core up to 13°, high enough to be worth it for 0h39m, highest around 8:35pm.

Why

Cloud	0	100% cloud, overcast
Moon	98	first quarter at 45%, sets 10:10pm, dark after that
Darkness	92	8h19m of astronomical darkness, 8:35pm–4:55am
Transparency	0	Dewpoint spread 0.3°C, fog or heavy haze likely
Targets	46	Milky Way core up to 13°, high enough to be worth it for 0h39m