When does Daylight Saving Time take effect in San Francisco?

Clocks advance 1 hour on the second Sunday in March and revert to standard time on the first Sunday in November.

What is the optimal meeting window between San Francisco and London?

Due to the 8-hour gap, the best collaboration window is 8:00 AM to 9:00 AM in San Francisco (corresponding to 4:00 PM to 5:00 PM in London).

Does Silicon Valley observe the same time as San Francisco?

Yes. The entire Bay Area, Silicon Valley, and California observe identical Pacific Time.

When does Daylight Saving Time take effect in San Francisco?

Clocks advance 1 hour on the second Sunday in March and revert to standard time on the first Sunday in November.

What is the optimal meeting window between San Francisco and London?

Due to the 8-hour gap, the best collaboration window is 8:00 AM to 9:00 AM in San Francisco (corresponding to 4:00 PM to 5:00 PM in London).

Does Silicon Valley observe the same time as San Francisco?

Yes. The entire Bay Area, Silicon Valley, and California observe identical Pacific Time.

United States (US)

Current Local Time in San Francisco, California

America/Los_Angeles • UTC -7

Saturday, October 10, 2026

9:23:26

Sunrise07:12

Sunset18:40

Solar Noon12:56

Day Length11h 28m

San Francisco Geographic & Administrative Facts

CountryUnited States

Coordinates37.77°N, -122.42°E

IANA TimezoneAmerica/Los_Angeles

Daylight SavingActive (Summer Time)

Real-Time Horology Differential

Time Difference From San Francisco

Instantaneous hours ahead or behind across key global metropolises.

London8 hours ahead

London is 8 hours ahead of San Francisco.

5:23:26PM

New York3 hours ahead

New York is 3 hours ahead of San Francisco.

12:23:26PM

Toronto3 hours ahead

Toronto is 3 hours ahead of San Francisco.

12:23:26PM

Paris9 hours ahead

Paris is 9 hours ahead of San Francisco.

6:23:26PM

Berlin9 hours ahead

Berlin is 9 hours ahead of San Francisco.

6:23:26PM

Dubai11 hours ahead

Dubai is 11 hours ahead of San Francisco.

8:23:26PM

Delhi12 hours 30 minutes ahead

Delhi is 12 hours 30 minutes ahead of San Francisco.

9:53:26PM

Mumbai12 hours 30 minutes ahead

Mumbai is 12 hours 30 minutes ahead of San Francisco.

9:53:26PM

Singapore15 hours ahead

Singapore is 15 hours ahead of San Francisco.

12:23:26PM

Tokyo16 hours ahead

Tokyo is 16 hours ahead of San Francisco.

1:23:26AM

Sydney18 hours ahead

Sydney is 18 hours ahead of San Francisco.

3:23:26AM

Bilateral Time Corridors

Time Difference Guides for San Francisco

Live dual atomic clocks, daylight saving variations, and shared working hours.

All 92 City Differences Directory

San Francisco to London

Compare Clocks & Overlap

London to San Francisco

Compare Clocks & Overlap

San Francisco to Paris

Compare Clocks & Overlap

Paris to San Francisco

Compare Clocks & Overlap

San Francisco to Tokyo

Compare Clocks & Overlap

Tokyo to San Francisco

Compare Clocks & Overlap

Verified Atomic Local Time

Live Pacific Time Clock for San Francisco & Silicon Valley

Check exact civil time in San Francisco, California with atomic-grade accuracy. Home to leading tech innovators and venture ecosystems, San Francisco operates on Pacific Time.

Track running seconds, check today's solar schedule, and manage global developer standups across European and Asia-Pacific timezone corridors.

Daylight Saving Time Rules in Northern California

Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.

Coordinating Distributed Engineering Teams

Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.

Frequently Asked Questions

Common queries, time calculations, and scientific explanations

Google SERP Verified

San Francisco follows Pacific Standard Time (PST, UTC-8) in winter and Pacific Daylight Time (PDT, UTC-7) in summer.

Explore More Locations Near San Francisco

Quick access to international capitals, timezone offsets, chronometry tools, and horology guides

Explore Interactive Map

Precision Horology & Global Time Tools

City Time Differences Directory

Exact hours ahead & overlap for 92+ city pairs

Coordinated Universal Time (UTC)

Canonical atomic reference standard and UTC offset zero

Multi-Zone Time Converter Hub

Convert hours across global zones and cities

Compare World Cities

Direct side-by-side time difference and overlap

United States Time Now

Live atomic clocks across all US time zones and Washington D.C.

Exact Time Digital Clock

Precision digital chronometer with seconds and atomic reference

Online Pomodoro Timer

25/5 study and deep work productivity intervals

Accurate Analog Clock

Smooth sweeping second hand and Swiss watch dial

552 Timezone Converters

Visual timeline converter across 552 global timezone pairs

Date Difference Calculator

Exact days, weeks, months & business days between dates

Date Calculator

Add or subtract days, weeks, months & business days

Golden Hour Calculator

Exact photography lighting, blue hour & civil twilight times

Sunrise & Sunset Times Hub

NOAA algorithm solar dawn and dusk times worldwide

Moon Phases & Illumination

Live lunar surface illumination % and 29.5-day synodic cycle

Interactive World Time Map

Real-time solar terminator, day/night zones & 46 live clocks

400+ Time Zones Directory

Complete canonical IANA database with live ticking clocks

Interactive Timezone Map

Live global clock bands with clickable UTC offset zones

World Cities Directory

Current local time and population across global metropolises

Today's Date Details

Day of year, ISO week, Julian day & year progress percentage

ISO Week Number Calculator

Current ISO week number, calendar quarters & weeks remaining

ISO 8601 String Parser

Parse, validate and format ISO-8601 date-time strings

Unix Timestamp Converter

Epoch seconds converter to human readable UTC & local time

Astronomy & Twilight Lab

Sunrise, sunset, golden hour & moon phase calendar

International Dialing Codes

Country calling codes & smart calling hour guide

Multi-Clock World Wall

Trading floor kiosk with Swiss analog & digital dials

Flight & Jet Lag Calculator

Travel time & circadian light adjustment protocol

Online Alarm Clock

Fullscreen bedside display with Web Audio chimes

Meeting Planner

Overlap working window across 4+ global hubs

Team Overlap Calculator

Mutual working hours matrix for remote teams

Business Days Calculator

Working days between dates & 90-day deadlines

Birthday & Age Countdown

Weeks, days & exact chronological age tracker

Atomic Clock Accuracy

NTP drift latency benchmark

Unix Timestamp Studio

Epoch seconds converter & 2038 lab

Military Time Converter & Chart

Convert 12h to 24h military time with spoken pronunciation & printable chart

Work Hours & Timesheet Calculator

Calculate weekly hours, lunch deductions, overtime pay & gross wages

Best Time to Call Calculator

Find overlapping daytime calling window between international cities

Time Zone VS Comparisons

Head-to-head differences (CST vs EST, PST vs MST, GMT vs UTC)

Daylight Saving Schedule

Global spring forward & fall back dates

Horology Learning Academy

Deep dive into UTC, leap seconds & chronometry

SEO Authority Simulator

Interactive DA vs Keyword Difficulty ranking simulator

High-Volume City Time Differences

All 92 City Differences Directory →Paris vs New York London vs Tokyo New York vs London New York vs São Paulo New York vs Honolulu Los Angeles vs Honolulu Dubai vs Delhi Tokyo vs Sydney San Francisco vs Paris Compare All Cities Matrix →

Current Local Time in San Francisco, California

San Francisco Geographic & Administrative Facts

Time Difference From San Francisco

Time Difference Guides for San Francisco

Live Pacific Time Clock for San Francisco & Silicon Valley

Daylight Saving Time Rules in Northern California

Coordinating Distributed Engineering Teams

Frequently Asked Questions

Explore More Locations Near San Francisco

Precision Horology & Global Time Tools

High-Volume City Time Differences

Global Financial & Metropolitan Capitals