Solstice
Tuesday, September 22
San Francisco’s Final Day of Summer 2026 (Sept. 22)
Get ready to say goodbye to summer. Tuesday, September 22, 2026, marks the Autumnal Equinox, when summer officially gives way to fall in the Northern Hemisphere. The equinox arrives in San Francisco at 5:05 PM, so Tuesday is the last day of astronomical summer.
Even though ...
Monday, December 21
“Ursid” Last Meteor Shower of 2026: Peaks on Winter Solstice
The annual Ursid meteor shower always peaks near the time of the December winter solstice.
The low-key Ursid meteor shower is expected to be active from December 17 to December 26, 2026. It typically peaks around the December solstice. In 2026, expect peak viewing in the ...
