When Do The Four Seasons Start And End ((free)) May 2026

When Do the Four Seasons Start and End? A Complete Guide to Astronomical vs. Meteorological Calendars

• Equinoxes: Sun crosses the celestial equator — day and night are nearly equal.
• Solstices: Sun reaches its most northerly or southerly declination — longest and shortest days.

• False. The astronomical seasons are reversed in the Southern Hemisphere. When it's the summer solstice in New York (June 21), it's the winter solstice in Sydney, Australia.

• March 20 or 21: The Vernal Equinox, also known as the Spring Equinox, marks the official start of spring. This is the day when day and night are approximately equal in length.
• Ends on June 20 or 21: Spring ends on the summer solstice, which marks the beginning of summer.

• Start: September 22 or 23 (Autumnal Equinox)
• End: December 21 or 22 (Winter Solstice)

definition (based on the calendar and temperature cycles). Because Earth is tilted, seasons are reversed between the Northern and Southern Hemispheres. The Old Farmer’s Almanac 2026 Seasonal Dates