Solstices & Equinoxes for San Francisco (1950—1999)

• Current Season

  

  Spring 2024

  Start (March equinox)

  Mar 198:06 pm

  Duration 92 days, 17 hrs, 44 mins

• Next Season

  

  Summer 2024

  Start (June solstice)

  Jun 201:50 pm

  Duration93 days, 15 hrs, 52 mins
• 

  Autumn 2024

  Start (September equinox)

  Sep 225:43 am

  Duration 89 days, 20 hrs, 37 mins
• 

  Winter 2024-2025

  Start (December solstice)

  Dec 211:20 am

  Duration 88 days, 23 hrs, 40 mins

Countries define seasons differently. This calculator refers to astronomical seasons, not meteorological seasons. Times after 1970 are local time for San Francisco. Times before 1970 are local time for Los Angeles.

Learn more about equinoxes and solstices

When Does Spring Start?

The first day of spring is at the vernal equinox, when day and night are equal. Find out the exact time and date.

When Does Summer Start?

When is the summer solstice 2023 in the southern and northern hemispheres?

When Does Fall Start?

North of the equator, fall begins in September. Find out the exact dates for both hemispheres.

When Does Winter Start?

The first day of winter in the Northern Hemisphere is in December; south of the equator, it is in June. Find out exactly when the winter season starts.

March Equinox

At the March equinox, the Sun crosses the equator from south to north. Explanation and 2024 equinox date.

June Solstice

The June solstice is the longest day of the year in the Northern Hemisphere and the shortest day in the Southern Hemisphere.

September Equinox

The Sun shines directly on the Equator on the September equinox and the length of day and night is nearly equal, but not quite.

December Solstice

December solstice marks the shortest day north of the equator and the longest day in the south.