There are several artists' birthdays today but a heck of a lot else is going on.
From the Fun and Cheap website:
2016 Cesar E. Chavez Day Parade & Festival | Mission Dist.
Saturday, April 23 – All Day | Cost: FREE | Dolores Park
The Annual Cesar E. Chavez Holiday Parade & Festival in San Francisco has become a significant event in the Mission drawing a diverse crowd of participants and attendees from different demographics and more...
All Day Make Your City Great 2016: Volunteer Weekend | SF FREE
9:00 am Surfrider Earth Day Beach Clean Up & BBQ | Ocean Beach FREE*
9:30 am The Beatles Choir: Volunteer Singalong | SF FREE*
All Day San Francisco Earth Day 2016 Festival & Massive Street Fair | Mission Dist. FREE
All Day ArtSeed’s 2016 Earth Day 10-Hour Art-A-Thon | Presidio $20*
All Day Earth Day Festival 2016: Cute Chicks & Live Surf Music | SF FREE
10:00 am Heron Watch at Stow Lake | Golden Gate Park FREE
All Day Treasure Island Flea & “Yo Mama’s Day” Celebration | SF $3
10:00 am Free Sneak Preview Movie: “Ratchet and Clank” | SF FREE*
All Day 2016 Shipyard Artsts Spring Open Studios: Saturday | Hunters Point FREE
11:00 am World Naked Bike Ride: Earth Day 2016 Edition | SF FREE
All Day Dutch “King’s Day” Windmill Festival 2016 | Golden Gate Park FREE*
All Day $1 Earth Day Sale | Buffalo Exchange $1
7:00 pm Prince Tribute Roller Disco Weekend | SF Church of 8 Wheels $10*
7:30 pm 2016 Earth Day Film Fest Outdoor Movie “The Edge of the Wild” | Peninsula