Time in San Mateo, United States

Time zone: PDT (UTC/GMT -07:00) — America/Los_Angeles

Clocks in San Mateo are set to PDT, 7 hours behind UTC (UTC-07:00). Software that asks for a region wants America/Los_Angeles — the IANA identifier for this zone.

Daylight saving applies here. Clocks next move back 1 hour on Sunday, 01 November 2026, putting San Mateo on PST and changing its gap to every other zone listed below.

San Mateo is one of 419 United States cities here, spread over 10 time zones; do not assume the rest of the country reads the same clock.

San Mateo has roughly 103,536 residents and ranks 203rd by population among the United States cities on this site.

Current gap between San Mateo and cities people most often need to coordinate with. These figures already account for daylight saving where it applies.

Overlap of a normal working day, shown in San Mateo time — outside these windows one side is off the clock.

No shared working window exists with London, Paris, Dubai or Mumbai, so those calls have to sit outside somebody's normal hours.

Same zone, same time — each of these sits on America/Los_Angeles alongside San Mateo, including through any clock change.

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