First Day of Fall 2027

The first day of fall 2027 is Thursday, September 23, 2027 in the Northern Hemisphere, at 06:01 UTC (the September equinox). The meteorological first day of fall is September 1.

First day of fall dates, 2026-2032

Astronomical vs meteorological fall

• Astronomical: starts at the September equinox (September 23 in 2027). This is the date most calendars and news reports call the first day of fall.
• Meteorological: starts on September 1 and always lasts three full months, so weather records line up with the calendar.
• Southern Hemisphere: the same moment starts spring.
• At an equinox the Sun is directly above the equator, and day and night are close to equal length everywhere on Earth. The days are getting shorter in the Northern Hemisphere.

FAQ

When is the first day of fall in 2027?

The astronomical first day of fall 2027 (September equinox) is Thursday, September 23, 2027, at 06:01 UTC. The date can be a day earlier or later in your time zone. The meteorological first day of fall is always September 1.

Why does the first day of fall change from year to year?

A calendar year (365 days) is slightly shorter than the 365.24 days Earth takes to circle the Sun, so the September equinox arrives about six hours later each year and then jumps back after a leap year. That is why the date moves between two or three days.

What is the difference between astronomical and meteorological fall?

Astronomical fall starts at the September equinox, which depends on Earth's tilt and orbit. Meteorological fall covers three whole calendar months starting on September 1, which makes weather statistics easier to compare year to year.

Is it fall in the Southern Hemisphere at the same time?

No. The seasons are opposite. When it is the first day of fall in the Northern Hemisphere, it is the first day of spring in the Southern Hemisphere.

What day is the first day of fall in 2028?

It is Friday, September 22, 2028 (UTC).

See also: Solstice and equinox dates 2026-2032 · First day of winter · First day of spring · First day of summer · First day of fall · Winter solstice · All holiday dates

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