NGC 3921 — midnight transit date and best time to observe

Object data

A galaxy in Ursa Major.

Location: Tokyo (change)

🗓️

Around Mar 16, 2026

The date it transits around midnight (transit altitude about 71°)

This date has already passed this year. Next year (2027) it will be around Mar 16.

For about 2–3 weeks either side of this date, the object stays high from evening to dawn — its observing season.

Tonight (Oct 10 evening – Oct 11 dawn) · Location: Tokyo (full darkness = end of astronomical dusk to start of dawn, altitude ≥ 15°)

🌘 Moon tonight: Waning crescent (age 28.6 days, 1% illuminated) — Little moonlight — a good time for faint objects

🔭

Oct 11 2:22 – 4:19

Hours of full darkness (end of astronomical dusk to start of dawn) when it is above 15° — the darkest sky, mostly clear of buildings and trees.

Night (sunset – sunrise) Full darkness (dusk – dawn) Moon up (darker = brighter moon) Best time to observe (thick line) Now

Sunset 17:13 → Dusk 18:37 → Dawn 4:19 → Sunrise 5:43

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