San Francisco, United States · UTC-7
Convert time from San Francisco
San Francisco is in the America/Los Angeles timezone (PST/UTC-8, shifting to PDT/UTC-7 during daylight saving time). San Francisco’s timezone has an outsized effect on the world. When Google, Apple, Meta, and Salesforce schedule product launches, earnings calls, and major announcements, they typically use Pacific Time. When a server in Frankfurt or Singapore needs to coordinate with a team in SoMa, it converts to PST or PDT. The Pacific Time Zone has become a de facto global technology standard layer.
United States Pacific Time runs UTC-8 in winter (PST) and UTC-7 in summer (PDT), shared with San Diego and San Jose in the Bay Area.
San Francisco at 37 degrees north has the marine climate that Karl the Fog enforces: summers are cool and frequently foggy, winters are mild, and the temperature variation through the year is less than almost anywhere else in the US at this latitude. The fog comes in through the Golden Gate each afternoon, pouring over the hills. The city’s outdoor calendar runs from September through November when the fog pulls back and the sun arrives.
the 1906 earthquake and the rebuilt city
The 1906 earthquake struck at 5:12am on April 18. The fire that followed burned for three days. The time is precise because the seismographs were running. The city rebuilt entirely within a decade.
9am in San Francisco is 5pm in London in winter.
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Questions about time in San Francisco
- What timezone is San Francisco in?
- San Francisco is in Pacific Time (PT), using the IANA timezone
America/Los_Angeles. The standard UTC offset is UTC-8 (PST) in winter and UTC-7 (PDT) during daylight saving time. - Does San Francisco observe daylight saving time?
- Yes. San Francisco observes daylight saving time, shifting from UTC-8 (standard time) to UTC-7 in summer.
- What is the current UTC offset for San Francisco?
- San Francisco is currently at UTC-7. It is currently observing daylight saving time.
- What is the time difference between San Francisco and New York?
- San Francisco is currently 3 hours behind New York.
- What is the time difference between San Francisco and London?
- San Francisco is currently 8 hours behind London.
- What is the time difference between San Francisco and Tokyo?
- San Francisco is currently 16 hours behind Tokyo. Tokyo does not observe daylight saving time, so this gap changes by 1 hour when San Francisco transitions to/from DST.
- What is the IANA timezone name for San Francisco?
- The IANA timezone database identifier for San Francisco is
America/Los_Angeles. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'America/Los_Angeles' })`), Python (`pytz.timezone('America/Los_Angeles')`), or any IANA-compatible library.