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Saturday, April 20

EarthFest 2024 at the San Francisco Zoo & Gardens (April 20-21)
EarthFest 2024 at the San Francisco Zoo & Gardens (April 20-21)

Celebrate Earth Day weekend by diving deep into the SF Zoo’s conservation projects and meeting their network of partners who make the world a more sustainable place. Find out what you can do at home, at work, and in your community to make a difference.  ...

Mountain View’s Shoreline Lake “Kayak Polo Cup of the West” (April 20-21)
Saturday, April 20 – 8:00 am - Ends at 6:00 pm | Cost: FREE*
*Free to Watch
| Shoreline Lake
Mountain View's Shoreline Lake "Kayak Polo Cup of the West" (April 20-21)

The 3rd Annual Kayak Polo Cup of the West (“COW”) tournament will take place at Shoreline Lake in Mountain View, on Saturday (April 20th) and Sunday (April 21st). As this event is open for public viewing, it’s an opportunity to watch a thrilling, fast-paced and ...

Pinole Earth Walk: Kids Activities, Snacks & Refreshments (Pinole)
Saturday, April 20 – 9:00 am - Ends at 12:00 pm | Cost: FREE | Fernandez Park
Pinole Earth Walk: Kids Activities, Snacks & Refreshments (Pinole)
On Saturday, April 20th at 9am we will take a walking pledge to protect the planet as a community. Come out and meet your neighbors, spend time with family, get some fresh air, or bring Fido for a walk! Snacks and refreshments will be provided ...
2024 “Bug Day” at Randall Museum: Insect Olympics, Bug Treats & Live Music (SF)
Saturday, April 20 – 10:00 am - Ends at 2:00 pm | Cost: FREE | Randall Museum
2024 "Bug Day" at Randall Museum: Insect Olympics, Bug Treats & Live Music (SF)
Check out the incredible extravaganza of insects at the Randall Museum’s popular Bug Day event celebrating everything insect with hands-on science and art activities, games, live music, movies and more. Join in the creepy-crawly fun and learn how important these little creatures are to the earth ...
2024 Free “Bug Day” Festival at Randall Museum (SF)
Saturday, April 20 – 10:00 am - Ends at 2:00 pm | Cost: FREE*
*Free Admission - Low-cost Activities
| Randall Museum
2024 Free "Bug Day" Festival at Randall Museum (SF)
Check out the incredible extravaganza of insects at the Randall Museum’s popular Bug Day event celebrating everything insect with hands-on science and art activities, games, live music, movies and more. Join in the creepy-crawly fun and learn how important these little creatures are to the earth ...
2024 “WhaleFest” Earth Day Fest: Whale Watching, Speakers & Clean Ups (Pacifica)
Saturday, April 20 – 10:30 am - Ends at 1:30 pm | Cost: FREE | Linda Mar State Beach
2024 "WhaleFest" Earth Day Fest: Whale Watching, Speakers & Clean Ups (Pacifica)
Join us at WhaleFest, an Earth Day celebration at Linda Mar State Beach in Pacifica on April 20th from 10:30 AM to 1:30 PM. Presented by the Pacific Beach Coalition this event invites the Bay Area to discover and celebrate our local whales. Booths will line ...
SF World Naked Bike Ride 2024 (Earth Day)
Saturday, April 20 – 11:00 am - Ends at 3:00 pm | Cost: FREE*
*A Big Smile Guarantees Your Freedom to Roll With Us!
| Rincon Park
SF World Naked Bike Ride 2024 (Earth Day)
By popular demand, we have added a #Bay2Breakers ( Sun 19 May ) “warm up” #WNBRsf2024 Ride&AfterParty ( Sat 18 May )* to the 2024 Calendar to engage the hundreds of Nudists & Naturists & thousands of other active fun loving folks in town that ...
4th Annual Tall Ship Celebration (Sausalito)
Saturday, April 20 – 11:00 am - Ends at 2:00 pm | Cost: FREE*
*Ticket must be purchased to sail on ship
| Bay Model Visitor Center
4th Annual Tall Ship Celebration (Sausalito)
Get the chance to tour, and even sail on a ship during Call of the Sea‘s Fourth Annual Tall Ship Celebration. This is an extra special event as the organization is celebrating 40 years of on-the-water education. The event is free and great for all ages featuring educational activities, music, food and more. 11 am- 1 ...
Earth Day in the Vineyard (Windsor)
Saturday, April 20 – 11:00 am - Ends at 2:00 pm | Cost: FREE*
*RSVP required
| La Crema Estate at Saralee's Vineyard
Earth Day in the Vineyard (Windsor)
Get your hands (lightly) dirty: Experience the biodiversity of the soil, vines, and flowers that come from our regenerative farming techniques through sight, scent, and touch. * Meet our charming flock of chickens and sheep that maintain our vineyards naturally. * Ask the experts! Get insider knowledge from ...
SF’s Free Outdoor Screen-Print Pop-up at Crane Cove Park (2024)
SF's Free Outdoor Screen-Print Pop-up at Crane Cove Park (2024)

‘Heart Your Parks’ Screenprinting Pop-Ups Return To Raise Funds For San Francisco Parks  The popular art giveaway events are returning for the second year to celebrate city parks and raise $50,000 to support these spaces. DATE UPDATE – Due to weather, the screenprinting pop-ups return ...

Gardening Workshop: Growing Cannabis in the Garden w/ Free Seeds (Albany)
Saturday, April 20 – 4:00 pm - Ends at 5:00 pm | Cost: FREE*
*Join us in a beautiful garden for a fab workshop about growing cannabis in your backyard
| Flowerland
Gardening Workshop: Growing Cannabis in the Garden w/ Free Seeds (Albany)
Did you know folks all over California and across the U.S. are already growing Cannabis at home? Whether you call it hemp or marijuana, enjoy THC and/or CBD, it is easy to grow in your backyard. Join experts Emily Gogol and Penny Barthel to learn ...

Sunday, April 21

EarthFest 2024 at the San Francisco Zoo & Gardens (April 20-21)
EarthFest 2024 at the San Francisco Zoo & Gardens (April 20-21)

Celebrate Earth Day weekend by diving deep into the SF Zoo’s conservation projects and meeting their network of partners who make the world a more sustainable place. Find out what you can do at home, at work, and in your community to make a difference.  ...

Mountain View’s Shoreline Lake “Kayak Polo Cup of the West” (April 20-21)
Sunday, April 21 – 8:00 am - Ends at 4:00 pm | Cost: FREE*
*Free to Watch
| Shoreline Lake
Mountain View's Shoreline Lake "Kayak Polo Cup of the West" (April 20-21)

The 3rd Annual Kayak Polo Cup of the West (“COW”) tournament will take place at Shoreline Lake in Mountain View, on Saturday (April 20th) and Sunday (April 21st). As this event is open for public viewing, it’s an opportunity to watch a thrilling, fast-paced and ...

Earth Month Guided Walk: Buena Vista Loop (SF)
Sunday, April 21 – 10:00 am - Ends at 12:00 pm | Cost: $25*
*Kids age 16 and under are free
| Haight Street and Central Avenue
Earth Month Guided Walk: Buena Vista Loop (SF)
Buena Vista means “good view,” and there are several on this Earth Month walk! Join consulting arborist and former Friends of the Urban Forest staffer Ellyn Shea for insights about trees and plants in this historic, scenic area. This is a fresh look at a route ...
Earth Day Celebration at CuriOdyssey (San Mateo)
Sunday, April 21 – 10:00 am - Ends at 5:00 pm | Cost: $19.95*
*Discounts for infants, seniors and members
| CuriOdyssey
Earth Day Celebration at CuriOdyssey April 21 @ 10:00 AM – 5:00 PM Come join us for an Earth Day celebration on Sunday, April 21, 2024! Enjoy music and tasty food from Satay on the Bay and Mozzeria, try out eco-activities for kids of all ages, browse our Earth Day Vendor ...
2024 Shoreline Lake Boathouse’s Free “Sail-A-Dinghy” Day (Mountain View)
Sunday, April 21 – 10:00 am - Ends at 4:00 pm | Cost: FREE | Shoreline Lake
2024 Shoreline Lake Boathouse's Free "Sail-A-Dinghy" Day (Mountain View)
Shoreline Lake, in Mountain View, is launching of a Sail-A-Dinghy-Day as part of the 2024 rollout of the sailing season and the Sunday Sailing Racing program. Taking place April 21, 2024, from 10am to 4pm, and designed to promote sailing as an accessible, fun and ...
2024 Shoreline Lake Boathouse + Free Sail-A-Dinghy-Day (Mountain view)
Sunday, April 21 – 10:00 am - Ends at 4:00 pm | Cost: FREE | Shoreline Lake
2024 Shoreline Lake Boathouse + Free Sail-A-Dinghy-Day (Mountain view)
Shoreline Lake, in Mountain View, is launching of a Sail-A-Dinghy-Day as part of the 2024 rollout of the sailing season and the Sunday Sailing Racing program. Taking place on April 21st, from 10am to 4pm, and designed to promote sailing as an accessible, fun and ...
Bernal Heights Earth Day Stroll 2024
Sunday, April 21 – 11:00 am - Ends at 3:00 pm | Cost: FREE | Bernal Heights Branch Library
Bernal Heights Earth Day Stroll 2024
Earth Day events of all shapes & sizes, along Cortland Ave and around Bernal hill. Sustainable vendors, artists, give aways, Earth Day sales, musicians, non-profits, habitat restoration and clean ups, demos and talks, community garden fairs… you name it. Come stroll along the hill, do ...

Saturday, April 27

SF’s Official Flower: Spring 2024 “Dahlia” Sale: (Golden Gate Park)
Saturday, April 27 – All Day | Cost: FREE | Hall of Flowers (GG Park)
SF's Official Flower: Spring 2024 "Dahlia" Sale: (Golden Gate Park)
Dahlia Tuber Sale! 4/27 9:30am- until sold out. Come to the SF County Fair Building for our in person tuber and cutting sale for amazing selection, deals, and steals. Our cutting team has produced over 1,000 plants for your gardens! we feature many show worthy ...
SF’s Free Outdoor Screen-Printing Pop-up at Heron’s Head Park (2024)
Saturday, April 27 – 11:00 am - Ends at 4:00 pm | Cost: FREE*
*Event is free to attend, and prints are free! A suggested donation of $25 supports San Francisco parks and public spaces.
| EcoCenter at Heron's Head Park
SF's Free Outdoor Screen-Printing Pop-up at Heron's Head Park (2024)

‘Heart Your Parks’ Screenprinting Pop-Ups Return To Raise Funds For San Francisco Parks  The popular art giveaway events are returning for the second year to celebrate city parks and raise $50,000 to support these spaces. DATE UPDATE – Due to weather, the screenprinting pop-ups return ...

Berkeley Bay Festival w/ Free Boat Rides (2024)
Saturday, April 27 – 11:00 am - Ends at 4:00 pm | Cost: FREE | Shorebird Park Nature Center
Celebrate the San Francisco Bay at the Berkeley Marina. Connect with the Bay and our local community through live music, performers, food, hands-on educational activities, and free boat rides. This free, family-focused event celebrates the Bay, its local wildlife, and the people and agencies dedicated to its ...

Saturday, May 4

2024 El Cerrito Hillside Festival + Insect Hike & Nature Scavenger Hunt (May 4-5)
Saturday, May 4 – 8:00 am - Ends at 8:00 pm | Cost: FREE | El Cerrito Hillside Natural Area
2024 El Cerrito Hillside Festival + Insect Hike & Nature Scavenger Hunt (May 4-5)

The El Cerrito Trail Trekkers are proud to host the tenth annual El Cerrito Hillside Festival in El Cerrito’s 100-acre gem, the Hillside Natural Area. There’s something for everyone at the festival, including guided, informative hikes about the geology, trees, edible and medicinal plants, birds, ...

Sunday, May 5

2024 El Cerrito Hillside Festival + Insect Hike & Nature Scavenger Hunt (May 4-5)
Sunday, May 5 – 8:00 am - Ends at 8:00 pm | Cost: FREE | El Cerrito Hillside Natural Area
2024 El Cerrito Hillside Festival + Insect Hike & Nature Scavenger Hunt (May 4-5)

The El Cerrito Trail Trekkers are proud to host the tenth annual El Cerrito Hillside Festival in El Cerrito’s 100-acre gem, the Hillside Natural Area. There’s something for everyone at the festival, including guided, informative hikes about the geology, trees, edible and medicinal plants, birds, ...

Saturday, May 18

SF Word Naked Bike Rides 2024 (Bay2Breakers Weekender)
Saturday, May 18 – 11:00 am - Ends at 3:00 pm | Cost: FREE*
*A Big Smile Guarantees Your Freedom to Roll With Us!
| Rincon Park
SF Word Naked Bike Rides 2024 (Bay2Breakers Weekender)
By popular demand, we have added a #Bay2Breakers ( Sun 19 May ) “warm up” #WNBRsf2024 Ride&AfterParty ( Sat 18 May )* to the 2024 Calendar to engage the hundreds of Nudists & Naturists & thousands of other active fun loving folks in town that ...

Saturday, June 8

SF World Naked Bike Rides 2024 (Summer Int’l Classic)
Saturday, June 8 – 11:00 am - Ends at 3:00 pm | Cost: FREE*
*A Big Smile Guarantees Your Freedom to Roll With Us!
| Rincon Park
SF World Naked Bike Rides 2024 (Summer Int'l Classic)
SUMMER Saturday 8 June International Classic 11 am Gathering & 12pm Noon Start ( Times for All Rides&AfterParties ) Rincon “Cupid’s Arrow” Park, Folsom Street & The Embarcadero Drive, San Francisco UPDATES: Tweets by sfwnbr https://wiki.worldnakedbikeride.org/index.php?title=San_Francisco A Big Smile Guarantees Your Freedom to Roll With Us! Why We Ride Naked or #BareAsYouDare: We ...

Monday, July 29

Delta Aquariids Meteor Shower 2024
Monday, July 29 – 10:00 pm - Ends at 5:00 am | Cost: FREE | San Francisco Bay Area
Delta Aquariids Meteor Shower 2024
The Delta Aquariid meteor shower will be active from July 12 to August 23, 2024, producing its peak rate of meteors around July 30. However, this meteor shower is unique; from late July through early August, you may see meteors. If you are unable to view ...