This event features the latest and greatest in baby gear, mommy and me products and fashions, and parenting must-haves and includes seminars and gift bags. $55 & up, 917-488-8542, www.bigcitymoms.com ...

Boating season kicks off with the blessing of the fleet and a festive parade featuring over 100 historic workboats, fireboats, towboats, classic, and contemporary craft decorated to the theme Nations ...

Get dirty and join the archaeologists to kick off the 2018 excavation season. Free, 415-561-4323, register at eventbrite.com ...

Join the Presidio and the Golden Gate National Recreation Area for a morning of stewardship projects (including one geared for families and children 9-years-old and younger) followed by a BBQ potluck ...

This epicurean extravaganza benefiting Meals on Wheels features an hors d’oeuvre and wine reception; a sit-down, three-course dinner; a lavish dessert reception; and live and silent auctions. $495, ...

Ozzy Osbourne’s guitar icon puts on a special acoustic performance, book reading and Q. & A. session relating to his tome, Bringing Metal to the Children. But don’t bring the children; this event is ...

Learn the feed and care of your own starter and how different factors affect fermentation in this class by Cat Shimizu from the Mission district’s Sour Flour. Includes samples and suggested reading.

Enjoy an Easter race with challenging hills and beautiful scenery in a mostly unknown corner of the city. Free–$5, 415 978-0837, dserunners.com ...

Saturday, April 20, 8:30 a.m.–1:30 p.m.

At a time when the scientific community needs bold allies and we all need stiff drinks, gather over inventive craft cocktails to champion the values of protecting the health of the planet, the public, ...

“Nonstop fun dance machine” Wonder Bread 5 brings a mix of disco and ‘80s sound, along with some classic rock and current pop hits. The Spazmatics also reach back to the ‘80s for their danceable music ...

Remembering the event that changed S.F. forever, civic and community members will gather at Lotta’s Fountain to commemorate the Great Earthquake and Fire of 1906. Free.