Fall in 2023 (in the Northern Hemisphere, including the U.S.) officially started on Saturday, September 23, 2023, at about 2:50 a.m. Eastern Daylight Time, when the autumnal equinox occurred.

Quick Scoop: Key Dates

  • Astronomical fall 2023 : Started Saturday, September 23, 2023 (autumnal equinox).
  • Exact time (Eastern U.S.) : Around 2:50 a.m. EDT on September 23, 2023.
  • Meteorological fall : Many weather agencies treat September 1, 2023, as the start of “fall” for climate and record-keeping purposes.

Why that date?

  • Astronomical fall begins when the sun is directly over Earth’s equator, giving nearly equal day and night—this is the autumnal equinox.
  • From that point on, days get shorter and nights longer in the Northern Hemisphere until the winter solstice in December.

How people talk about “when fall starts”

On forums and social discussions, people often say fall “starts” when it feels like fall—cooler air, changing leaves, or when they put up Halloween decorations—often in September or even late August. But on the calendar, for 2023, the official start is September 23.🕰️

TL;DR: For 2023, if you’re asking “when does fall start 2023,” the official answer is September 23, 2023 (autumnal equinox), though some treat September 1 as the start for meteorological or “feels like fall” reasons.

Information gathered from public forums or data available on the internet and portrayed here.