Current Time in San Francisco

Time Zone & Business Hours — San Francisco

San Francisco runs on Pacific Time — PST (UTC−8) in winter and PDT (UTC−7) in summer. As the gateway to Silicon Valley, San Francisco time is the most influential timezone in the global technology industry: major product launches, developer conferences, and earnings calls from Google, Apple, and Meta all run on PT.

San Francisco's tech industry has made Pacific Time a de facto global standard for product announcements: when a major platform ships an update, it typically goes live at a PST or PDT hour, meaning teams in London are waiting until evening and teams in Tokyo are checking news the following morning.