When is the first day of Spring, Summer, Fall, and Winter?
Astronomical seasons for 2026 (Northern Hemisphere convention):
- March Equinox (Spring N. Hemisphere): Friday, March 20, 2026 — already passed
- June Solstice (Summer N. Hemisphere): Sunday, June 21, 2026 — already passed
- September Equinox (Autumn N. Hemisphere): Wednesday, September 23, 2026 — already passed
- December Solstice (Winter N. Hemisphere): Monday, December 21, 2026 — in 60 days
Updated October 22, 2026 at 07:48 UTC.