When Do The Four | Seasons Start And End ((install))

The start and end dates for the four seasons depend on whether you use the astronomical (sun-based) or meteorological (temperature-based) calendar. The Old Farmer’s Almanac Northern Hemisphere Dates (2026)

Exact timestamps for equinoxes/solstices vary each year and are given in UTC; local dates can differ depending on time zone.
Precession and long-term orbital cycles slowly change timing over millennia, but not enough to affect human calendars on short timescales.

Winter:

Begins on March 20 or 21: The Autumnal Equinox marks the start of autumn.
Ends on June 20 or 21: Autumn ends on the winter solstice.

In the Southern Hemisphere, spring starts on: when do the four seasons start and end

Lag of Seasons: Why the hottest day isn't until weeks after the solstice (the Earth takes time to warm up). The start and end dates for the four

Meteorological and Astronomical Seasons: Southern ... - NOAA Exact timestamps for equinoxes/solstices vary each year and