equinox
notableSeptember equinox
September equinox in the astronomical calendar. The equinox/solstice is a global instant; its season name applies to the Northern Hemisphere.
Where to look
An astronomical season marker, not a sky object; season direction is reversed south of the equator.
Technical source record
2.1.19 · 2033-3 · retrieved 2026-09-30
Calculated by: Astronomy Engine Seasons(2033).
ObserverExample sky· UTC
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