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Days Until First Day of Fall (Autumn Equinox) 2027

Updated October 12, 2026

346 days

until Thursday, September 23, 2027

When is First Day of Fall (Autumn Equinox)?

The Northern Hemisphere autumn equinox falls around September 22–23. In 2026 it falls on Tuesday, September 22, 2026, and in 2027 it's on Thursday, September 23, 2027. When this page was last updated, on October 12, 2026, there were 346 days to go, which is about 49 weeks and 3 days. The counter at the top keeps ticking down in real time on your device, so it's always current.

Year	Date	Day of the week
2026	September 22	Tuesday
2027	September 23	Thursday

A little history

At the September equinox, day and night are again nearly equal, and days keep getting shorter until the winter solstice. Meteorological fall starts on September 1.

How people celebrate

Pumpkin spice everything, apple picking, football and the first cozy sweaters. The Harvest Moon, the full moon closest to the equinox, often gives farmers extra light in the evening. It's also a good weekend to clean gutters before leaves start dropping.

Closures and practical notes

In the Southern Hemisphere this equinox marks the start of spring.

Planning tips

Astronomical seasons follow the Earth's position around the sun, so the exact moment can land on a slightly different date depending on your time zone. Meteorologists use simpler dates (the first of March, June, September and December) to make weather records easier to compare.

Changes in daylight affect sleep and mood more than most of us expect. Getting outside in the morning, keeping a steady bedtime and eating dinner at a regular time all help your body clock adjust.

How the countdown works

We count full calendar days from today's date to the holiday, using the clock on your own phone or computer, so it matches your local time zone. On the day itself the counter switches to the next year's date. Want to count to a birthday or deadline instead? Our days until any date page does that in one tap.

Frequently asked questions

When is First Day of Fall (Autumn Equinox) 2027?

Thursday, September 23, 2027.

What day of the week is First Day of Fall (Autumn Equinox) in 2027?

It's a Thursday (September 23, 2027).

When is the first day of fall 2027?

Around September 23, 2027 in the Northern Hemisphere.

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