September 22, 2023 was not a single major federal holiday in the U.S., but it featured a cluster of smaller observances and also marked the start of fall (the autumnal equinox in 2023).

Key observances on September 22, 2023

Some of the better‑known days that fell on September 22, 2023 included:

  • Autumnal Equinox / First Day of Fall (in the U.S. time zones where it fell on the 22nd)
  • Native American Day (observed this date in California and Nevada)
  • American Business Women’s Day / Business Women’s Day
  • World Car‑Free Day / Car Free Day
  • Hobbit Day (inspired by Tolkien’s “The Hobbit” and “The Lord of the Rings”)
  • Falls Prevention Awareness Day (tied to the first day of fall)
  • National Elephant Appreciation Day
  • National Ice Cream Cone Day
  • National White Chocolate Day
  • National Girls’ Night In Day

None of these are federal bank holidays, but they are widely listed on “holiday/observance” calendars for that date in 2023.

TL;DR: If you’re asking “what holiday is September 22, 2023?”, the strongest answers are that it was the first day of fall (autumnal equinox in many places) and, in some U.S. states, Native American Day, along with numerous fun observances like Hobbit Day and World Car‑Free Day.