How Many Days Until the Autumn Equinox?
There are 76 days until the Autumn Equinox, on Tuesday, September 22, 2026. The September equinox generally falls on September 22, marking the astronomical start of autumn in the Northern Hemisphere. The counter counts down to the point where daylight and darkness are nearly equal again.
Countdown to the Autumn Equinox
Tuesday, September 22, 2026About the countdown to the Autumn Equinox
The equinox instant drifts slightly each year and can land on September 22 or September 23, so we anchor the countdown to September 22 for a steady target.
As the Sun crosses back over the celestial equator, days begin to shorten in the north and lengthen in the south, where the date instead marks the beginning of spring.
The counter above reads from your device clock and refreshes every second, so the days, hours, minutes and seconds always reflect the time remaining right now. When the Autumn Equinox arrives, the page quietly moves its target to the following year so the countdown never runs out of road.
Frequently asked questions
How many days until the Autumn Equinox?
There are 76 days until the Autumn Equinox, which falls on Tuesday, September 22, 2026. The live counter above updates every second.
What day of the week is the Autumn Equinox this time?
The next the Autumn Equinox falls on a Tuesday (Tuesday, September 22, 2026). The weekday can change from year to year, which the countdown accounts for automatically.
Does this countdown update every year?
Yes. Once the Autumn Equinox passes, the page rolls its target forward to the next occurrence, so the countdown stays accurate without any manual updates.
Is the the Autumn Equinox countdown based on my time zone?
The day count uses your device's local date, so the number of days matches your own calendar. The live seconds tick down from your local clock.
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