This one is for all the mothers out there. The Petaluma Mothers’ Club celebrates 2 to 5 p.m. today with its 10th annual Spring Tea and Silent Auction at the Petaluma Golf and Country Club, 1500 Country Club Drive. There will be food and drink, plus a raffle and balloon pops along with the auction. Cost is $25. Call 778-6494 or go to petalumamothersclub.org.

If it’s early June, it must be time for Petaluma’s annual Day on the River. The annual event is 9 a.m.-3 p.m. today, with kayaking, stand-up paddling, Hawaiian outrigger canoeing, rowing and pedal boats. At Foundary Wharf, where Second Street meets the river, there will be displays, food, music and casual childcare while adults try out of some of the watercraft. It’s free. Call 658-1365.

Author David Talbot’s “Season of the Witch: Enchantment, Terror and Deliverance in the City of Love,” examines San Francisco between 1967 and 1982 as activists and dreamers changed the city by the bay. Talbot will appear at 7 p.m. Friday for a talk and book-signing at Copperfield’s Books, 140 Kentucky St. Info: 762-0563 or copperfieldsbooks.com.

Quick recognition can help save the life of someone suffering cardiac arrest, heart attack or stroke. Find out how to spot signs of a medical emergency and learn CPR (cardiopulmonary resuscitation) 9 a.m. to noon Saturday at Petaluma Valley Hospital, 400 N McDowell Blvd. Cost is $65. Register at phcd.org.

Searching for your heart’s delight? The Petaluma Art Center may have the answer: its third annual Arts D’Light celebration. The evening is a benefit for the center offering food and wine, jazz and desserts, strolling musicians and an art auction. The action begins at 6:30 p.m. Saturday at the Arts Center, 230 Lakeville St. Cost is $60-$75. Call 762-5600 or visit petalumaartscenter.org.

— Katie Watts