September Equinox is Tuesday, September 22, 2026. Send free animated September Equinox eCards instantly with DeepTrench — choose from hundreds of designs, personalize your message, and deliver to anyone's inbox in seconds. No cost, no app required.
What is September Equinox?
The September Equinox, also known as the Autumnal Equinox, marks the moment when the sun is exactly above the Earth's equator, signaling the start of fall in the Northern Hemisphere and spring in the Southern Hemisphere.
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When is September Equinox?
| Year | Date | Day |
|---|---|---|
| 2026 | September 22, 2026 | Tuesday |
| 2027 | September 22, 2027 | Wednesday |
| 2028 | September 22, 2028 | Friday |
| 2029 | September 22, 2029 | Saturday |
| 2030 | September 22, 2030 | Sunday |
Celebrate September Equinox with a Letter
Write a beautiful handwritten-style letter on elegant stationery. Choose your font, add a wax seal, and share it instantly — no stamp needed.
4 font styles · 4 paper styles · Wax seal & stamps · Share via link
Gift Ideas for September Equinox
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