Astronomical Affairs Department Announces Autumn Begins Wednesday Morning at 4:05 AM MCT
The Astronomical Affairs Department said the autumnal equinox will occur on Wednesday, September 23 2026 at 4:05 AM MCT, starting astronomical autumn in the Northern Hemisphere.
According to the Astronomical Affairs Department, the sun will cross the celestial equator moving southward at 4:05 AM MCT on Wednesday, September 23 2026. This moment marks the official start of astronomical autumn for regions north of the equator, while the Southern Hemisphere will simultaneously enter astronomical spring. The announcement was made from Muscat.
Why it matters
The equinox signals a shift in seasons, affecting weather patterns, agriculture and cultural calendars worldwide.
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