Seasons
When is September Equinox?
September Equinox is on Wednesday, September 23, 2026 (US Eastern)
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Find out exactly when September Equinox is. The date and live countdown below are shown in US Eastern (ET) time and update every second.
Frequently asked questions
How many days until September Equinox?
There are 53 days until September Equinox on Wednesday, September 23, 2026.
What date is September Equinox?
September Equinox is on Wednesday, September 23, 2026 (US Eastern time).
How many weeks until September Equinox?
There are 7 weeks and 4 days until September Equinox.
How many hours until September Equinox?
There are 1,289 hours until September Equinox.
Full September Equinox countdown →
All times shown in US Eastern (America/New_York).