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Saturday, April 4

Sick Plant Clinic | UC Berkeley Botanical Garden
Saturday, April 4 – 9:00 am | Cost: FREE*
*Garden admission is free only if you're attending the Sick Plant Clinic.
| UC Berkeley Botanical Garden
Sick Plant Clinic | UC Berkeley Botanical Garden

Find out which diseases ail your plants at the free monthly Sick Plant Clinic at the UC Berkeley Botanical Garden happening from 9 am to noon on the first Saturday of the month. Entomologists are also available to identify the pests that are living in your plants. Please cover plants ...Monthly

Sunday, April 5

CANCELED: City Star Party & Telescope Night | Presidio
Sunday, April 5 – 7:30 pm | Cost: FREE*
*Weather permitting. Please check the SFAA website for updated information.
| Presidio Parade Grounds
CANCELED: City Star Party & Telescope Night | Presidio
UPDATE: Due to COVID-19 concerns, this event has been canceled.

Tuesday, April 7

The Biggest “Supermoon” of 2020 | Pink Moon
Tuesday, April 7 – 6:00 pm | Cost: FREE | San Francisco Bay Area
The Biggest "Supermoon" of 2020 | Pink Moon
On April 8th, the Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 7:35 pm pst. This year, in 2020, this April full moon also presents the ...

Thursday, April 9

SF by the Bay Sci-Fi Festival Free Movie: Blade Runner | SF
Thursday, April 9 – 12:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival Free Movie: Blade Runner | SF
SF by the Bay Sci-Fi Festival Free Movie: Blade Runner Thursday, Apr. 9, 12 – 2 p.m. Koret Auditorium, Lower Level R, 117 mins., 1982 A blade runner seeks to terminate four replicants who have stolen a space ship and returned to Earth to find their creator.

Sunday, April 12

Sci-Fi Festival: Science Fiction & Fantasy Costume Contest | SF
Sunday, April 12 – 12:00 pm | Cost: FREE | San Francisco Main Public Library
Sci-Fi Festival: Science Fiction & Fantasy Costume Contest | SF
SF by the Bay Sci-Fi Festival Science Fiction & Fantasy Costume Contest Sunday, Apr. 12 Registration: 12 – 1 p.m., Contest: 2 – 4 p.m. Koret Auditorium, Lower Level Get your most fantastical self ready for SFPL’s Science Fiction & Fantasy Costume Contest! Fans of science fiction, fantasy, ...
Anime & Manga Club: An Afternoon Full Of Fun | SF
Sunday, April 12 – 2:00 pm | Cost: FREE | Park Branch Library
Anime & Manga Club: An Afternoon Full Of Fun | SF

Come join at the Park Branch Library, every 2nd Sunday of the month, for an afternoon of anime, manga, discussion, art, and lots of fun. Snacks and refreshments will be provided. This club is for teens ages 12-18 years old.Monthly

Yuri’s Night Space Party: Space-Themed Costumes & Robot Driving Games | North Bay
Sunday, April 12 – 6:30 pm | Cost: FREE*
*Due to space constraints, an RSVP is recommended.
| Space Station Museum
Yuri's Night Space Party: Space-Themed Costumes & Robot Driving Games | North Bay
Come visit The Space Station Museum to celebrate Yuri’s Night, a celebration for cosmo-pioneer Yuri Gagarin, the first human in space, on April 12, 2020. There will be a space-themed costume contest (bring your friends and dress up), robot driving games, space themed trivia, and free food and ...

Wednesday, April 15

Nerd Nite: Geeky Lectures in a Rock Club | Rickshaw Stop
Wednesday, April 15 – 7:00 pm | Cost: $10 | Rickshaw Stop
Nerd Nite: Geeky Lectures in a Rock Club | Rickshaw Stop

What happens when geeks take over a rock club for an evening of drinking and presentations? Find out at Nerd Nite, a monthly lecture-in-a-bar series. They get smart and interesting people, give them lots of free drinks, and put them on stage in front of a couple ...Monthly

Free Astronomy Lecture | Castro
Wednesday, April 15 – 7:00 pm | Cost: FREE | Randall Museum
Free Astronomy Lecture | Castro

Once monthly, the SFAA hosts distinguished guest speakers who are leaders in the fields of astronomy, physics and related disciplines and they present to SFAA Members the latest developments from cutting-edge scientific programs. Held in the Randall Museum Theater on the third Wednesday of every month, ...Monthly

Thursday, April 16

SF by the Bay Sci-Fi Festival Free Movie: Time After Time | SF
Thursday, April 16 – 12:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival Free Movie: Time After Time | SF
SF by the Bay Sci-Fi Festival Free Movie: Time After Time Thursday, Apr. 16, 12 – 2 p.m. Koret Auditorium, Lower Level PG, 112 mins., 1979 H.G. Wells pursues Jack the Ripper into San Francisco circa 1979, after the serial murderer uses the future writer’s time machine to escape ...
SF by the Bay Sci-Fi Festival Podcast: Our Opinions Are Correct | SF
Thursday, April 16 – 6:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival Podcast: Our Opinions Are Correct | SF
SF by the Bay Sci-Fi Festival Podcast: Our Opinions Are Correct Thursday, Apr. 16, 6 – 7:30 p.m. Latino/Hispanic Rooms, Lower Level Annalee Newitz, a science journalist who writes science fiction, and Charlie Jane Anders, a science fiction writer who is obsessed with science, will host their ...

Saturday, April 18

CANCELED: Cal Day 2020: Free Concerts, Museums, Hands-On Exhibits & Lectures | UC Berkeley
Saturday, April 18 – All Day | Cost: FREE | UC Berkeley - Sproul Plaza
CANCELED: Cal Day 2020: Free Concerts, Museums, Hands-On Exhibits & Lectures | UC Berkeley
UPDATE: Due to coronavirus concerns, this event has been cancelled for 2020. On Cal Day, the entire UC Berkeley campus once again throws open its doors to the public and presents a full day of over 400 events – free lectures, performances, tours, concerts and more to showcase the ...
“Science@Cal”: Renowned Scientist Lecture | UC Berkeley
Saturday, April 18 – 11:00 am | Cost: FREE | Mulford Hall (UC Berkeley)
"Science@Cal": Renowned Scientist Lecture | UC Berkeley

Science@Cal is proud to present a series of free public science lectures on the third Saturday of every month. These talks are given by renowned UC Berkeley scientists and aimed at general audiences. Talks take place on the UC Berkeley campus at 11 am. Doors ...Monthly

Sunday, April 19

SF by the Bay Sci-Fi Festival: Tachyon Publications Anniversary | SF
Sunday, April 19 – 2:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival: Tachyon Publications Anniversary | SF
SF by the Bay Sci-Fi Festival: Tachyon Publications Anniversary Sunday, Apr. 19, 2 – 4 p.m. Latino/Hispanic Rooms, Lower Level Celebrate the 25th anniversary of San Francisco’s Tachyon Publications with publisher Jacob Weisman and special guests. Tachyon Publications, an independent press specializing in science fiction and fantasy books, ...

Tuesday, April 21

Lyrid Meteor Shower | 2020
Tuesday, April 21 – 10:00 pm | Cost: FREE | San Francisco Bay Area
Lyrid Meteor Shower | 2020
The annual Lyrid meteor shower lasts from about April 16 to 25. About 10 to 15 meteors per hour can be expected around the shower’s peak, in a dark sky. In 2020, the peak viewing hours is expected to take place in the dark hours before ...

Wednesday, April 22

SF by the Bay Sci-Fi Festival: A Talk with Steven Black & Don Herron | SF
Wednesday, April 22 – 6:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival: A Talk with Steven Black & Don Herron | SF
SF by the Bay Sci-Fi Festival: Remembering the 3 Ms and FL A Talk with Steven Black and Don Herron Wednesday, Apr. 22, 6 – 7:30 p.m. Latino/Hispanic Rooms, Lower Level  Pioneering Bay Area science fiction and fantasy authors Miriam Allen de Ford, Margaret St. Clair, Margo Skinner, and ...
Shaping SF Lecture: Clean Air Justice Discussion | SF
Wednesday, April 22 – 7:30 pm | Cost: FREE | Eric Quezada Center
Shaping SF Lecture: Clean Air Justice Discussion | SF
Social and environmental justice shapes the very air we breathe. Local players in the Bay Area are leading the nation—and in many cases the world—on setting policy, designing action plans for emissions reduction, and working with new technologies to identify and monitor hyperlocal hot spots ...

Thursday, April 23

SF by the Bay Sci-Fi Festival Free Movie: THX 1138 | SF
Thursday, April 23 – 12:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival Free Movie: THX 1138 | SF
SF by the Bay Sci-Fi Festival Free Movie: THX 1138 Thursday, Apr. 23, 12 – 1:30 p.m. Koret Auditorium, Lower Level R, 86 mins., 1971. In this futuristic film by George Lucas, shot around the Bay Area and in BART tunnels, a man named THX 1138 and a woman ...

Friday, April 24

San Francisco Beard & Mustache Club | Mission Dist.
Friday, April 24 – 7:00 pm | Cost: FREE | Zeitgeist

Join the SF Beard and Mustache Club for a monthly gathering at Zeitgeist at 7 pm every last Friday of the month. If you have a beard or mustache, if you like beards and mustaches, or if you want a beard or mustache, then by all means ...Monthly

Monday, April 27

Nerd Nite East Bay: Geeky Lectures in a Bar | Oakland
Monday, April 27 – 7:00 pm | Cost: $8*
*$8 in advance; $10 at the door. Doors at 7 pm; Show at 8 pm
| The Uptown Nightclub
Nerd Nite East Bay: Geeky Lectures in a Bar | Oakland

Nerd Nite East Bay is a monthly lecture-in-a-bar series. They get smart and interesting people, give them lots of free drinks, and put them on stage in front of a couple hundred tipsy nerds. Sometimes it’s funny, sometimes it’s salacious, and it’s always nerdy. Nerd ...Monthly

Tuesday, April 28

Nerd Nite Silicon Valley | San Jose
Tuesday, April 28 – 7:00 pm | Cost: FREE*
*Admission is donation-based.
| The Tabard Theatre Company
Nerd Nite Silicon Valley | San Jose

Calling all Silicon Valley nerds – Nerd Nite is back with some fresh faces and some seriously nerd-tastic speakers in San Jose every last Tuesday of the month. Nerd Nite is a celebration of nerdom at its finest with all the essential components: brains, booze, and banter; curiosity, cocktails, and ...Monthly

Thursday, April 30

SF by the Bay Sci-Fi Festival Free Movie: Star Trek IV “The Voyage Home” | SF
Thursday, April 30 – 12:00 pm | Cost: FREE | San Francisco Main Public Library
SF by the Bay Sci-Fi Festival Free Movie: Star Trek IV “The Voyage Home” | SF
SF by the Bay Sci-Fi Festival Free Movie: Star Trek IV “The Voyage Home” Thursday, Apr. 30, 12 – 2 p.m. Koret Auditorium, Lower Level PG, 119 mins., 1986. To save Earth from an alien probe, Admiral James T. Kirk and his fugitive crew go back in time to ...

Friday, May 1

$5 First Friday at Chabot Space & Science Center | Oakland Hills
Friday, May 1 – 6:00 pm | Cost: $5*
*From 6-10pm enjoy $5 admission to the Center. There is no pre-registration for First Fridays.
| Chabot Space & Science Center
$5 First Friday at Chabot Space & Science Center | Oakland Hills

Enjoy $5 admission to the Chabot Space & Science Center in the Oakland Hills every First Friday of the month from 6-10 pm. $5 admission includes unlimited access to everything from laser and planetarium shows to Night Hikes and Star Stories. Regular admission is $18 ...Monthly

Saturday, May 2

Sick Plant Clinic | UC Berkeley Botanical Garden
Saturday, May 2 – 9:00 am | Cost: FREE*
*Garden admission is free only if you're attending the Sick Plant Clinic.
| UC Berkeley Botanical Garden
Sick Plant Clinic | UC Berkeley Botanical Garden

Find out which diseases ail your plants at the free monthly Sick Plant Clinic at the UC Berkeley Botanical Garden happening from 9 am to noon on the first Saturday of the month. Entomologists are also available to identify the pests that are living in your plants. Please cover plants ...Monthly

Sunday, May 3

City Star Party & Telescope Night | Lands End
City Star Party & Telescope Night | Lands End

The San Francisco Amateur Astronomers invite you to their next City Star Party, where you can take a gander at our universe through telescopes, socialize with more experienced amateur astronomers, and get some tips about the night sky. Take in the view from San Francisco’s picturesque Land’s End or other ...

Thursday, May 7

Free Rooftop Stargazing Party “Astro Night” | UC Berkeley
Thursday, May 7 – 7:30 pm | Cost: FREE | Campbell Hall (UC Berkeley)
Free Rooftop Stargazing Party "Astro Night" | UC Berkeley

Astro Night is UC Berkeley’s free stargazing and lecture event open to the public. Held typically on the first Thursday of the month (during select months, as weather permits), members of the public are invited to take part in guided stargazings using our fleet of telescopes, including ...

“Supermoon” Night Over San Francisco | Super Flower Moon
Thursday, May 7 – 10:45 pm | Cost: FREE | San Francisco Bay Area
"Supermoon" Night Over San Francisco | Super Flower Moon
On May 7th, the Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 3:45 am pst. This full moon was known by early Native American tribes as the ...

Friday, May 8

San Francisco History Days at The Mint | 2020
Friday, May 8 – All Day | Cost: FREE | The Historic San Francisco Mint
San Francisco History Days at The Mint | 2020

Explore San Francisco’s amazing history at the annual San Francisco History Expo as the Old Mint (built in 1874) becomes a series of pop-up museums of San Francisco history with more than 120 exhibitors. 2020 San Francisco History Days Friday Evening, May 8, 2020 Saturday, May ...

Saturday, May 9

2020 San Francisco History Days | Old Mint
Saturday, May 9 – All Day | Cost: FREE | The Historic San Francisco Mint
2020 San Francisco History Days | Old Mint

Explore San Francisco’s amazing history at the annual San Francisco History Expo as the Old Mint (built in 1874) becomes a series of pop-up museums of San Francisco history with more than 120 exhibitors. 2020 San Francisco History Days Friday Evening, May 8, 2020 Saturday, May ...

Sunday, May 10

Anime & Manga Club: An Afternoon Full Of Fun | SF
Sunday, May 10 – 2:00 pm | Cost: FREE | Park Branch Library
Anime & Manga Club: An Afternoon Full Of Fun | SF

Come join at the Park Branch Library, every 2nd Sunday of the month, for an afternoon of anime, manga, discussion, art, and lots of fun. Snacks and refreshments will be provided. This club is for teens ages 12-18 years old.Monthly