1st Day Autumn 2025. America the exact moment of the autumnal equinox in. In 2025, the first day of fall will fall on tuesday, september 23nd.


1st Day Autumn 2025

These dates may be modified as official changes are announced, so please check back. Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s axis.

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