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September 23 is the 266th day of the year (267th in leap years) in the Gregorian calendar. There are 99 days remaining until the end of the year. It is frequently the day of the autumnal equinox in the Northern Hemisphere and the day of the vernal equinox in the Southern Hemisphere.

Events[edit | edit source]

References[edit | edit source]

  1. o34954845Sixth World Almanac p. 59

External links[edit | edit source]

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