First Day of Fall 2026
Welcome autumn on the First Day of Fall! In 2026 the September equinox lands on September 22 for much of the world — the astronomical start of fall in the Northern Hemisphere — and it is a natural seasonal page for calendars, classrooms, and cozy food content.
About First Day of Fall
History & origins
The First Day of Fall (autumnal equinox in the Northern Hemisphere) is an astronomical season start, not a made-up food holiday. Around the equinox, day and night are roughly equal in length as Earth’s tilt and orbit put the Sun on the celestial equator. The exact UTC moment of the equinox shifts slightly by year; for planning on TheDayOf, September 22, 2026 is the calendar date used for this page.
Meteorological autumn (September–November) is a weather-service convention and is different from the astronomical equinox. Both are useful; this page follows the equinox date people search for as “first day of fall.”
Why it matters
Seasonal searches spike when people want the date, classroom activities, and fall food ideas. A clear equinox page also supports month hubs and shopping guides later in the year.
How to celebrate
Note the equinox date on your calendar. Take a walk and notice earlier evenings. Cook a fall recipe (squash, apples, cider). Reset home lighting for darker evenings. Share one outdoor photo.
Facts
- The Northern Hemisphere’s astronomical autumn begins at the September equinox
- Day and night are roughly equal near the equinox
- Meteorological autumn (Sep–Nov) is a different convention from the equinox
- The exact equinox moment is measured in UTC and can fall on Sep 22 or 23 depending on the year
- On TheDayOf for 2026 this page uses Tuesday, September 22
Upcoming dates
- Tuesday, September 22, 2026
- Wednesday, September 22, 2027
- Friday, September 22, 2028
- Saturday, September 22, 2029
- Sunday, September 22, 2030
Frequently asked questions
When is First Day of Fall in 2026?
First Day of Fall in 2026 falls on Tuesday, September 22, 2026.
Is today First Day of Fall?
No. First Day of Fall in 2026 falls on Tuesday, September 22, 2026, not today.
What is the First Day of Fall?
It is the start of astronomical autumn in the Northern Hemisphere, marked by the September equinox.
Is meteorological fall the same thing?
No. Meteorological autumn is often defined as September through November for climate statistics.
Does the date change?
The equinox UTC moment shifts by year, so the calendar date can be September 22 or 23.
How do you observe it?
Mark the date, get outside, and lean into early fall food and earlier sunsets.
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