What Time Zone Is California In? Pacific Time Explained

California is entirely within the Pacific Time Zone. Every city in the state — from San Diego to San Francisco to Sacramento — observes the same time. The IANA time zone identifier is America/Los_Angeles.

Pacific Time: UTC Offsets

• Pacific Standard Time (PST): UTC-8 (November through early March)
• Pacific Daylight Time (PDT): UTC-7 (early March through November)

California observes Daylight Saving Time on the standard US schedule. In 2026, clocks spring forward on March 8 and fall back on November 1.

Interestingly, California voters passed Proposition 7 in 2018, which authorized the state legislature to adopt permanent DST (staying on PDT year-round). However, this requires federal approval through the US Congress, which has not yet passed the necessary legislation. For now, California continues to switch clocks twice a year.

California Time vs Other US Time Zones

Comparison	Standard Time	DST
California vs New York	3 hours behind	3 hours behind
California vs Chicago	2 hours behind	2 hours behind
California vs Denver	1 hour behind	1 hour behind
California vs Hawaii	2 hours ahead	3 hours ahead

The gap between California and Hawaii changes because Hawaii does not observe DST. During standard time, Hawaii is 2 hours behind California (HST is UTC-10, PST is UTC-8). During California's DST, the gap widens to 3 hours since Hawaii stays at UTC-10 while California moves to UTC-7.

California Time vs Global Cities

These are approximate offsets that shift by an hour during DST transitions:

• London: 8 hours ahead (7 during DST mismatch weeks)
• Tokyo: 17 hours ahead in winter, 16 in summer (Japan has no DST)
• Sydney: 17-19 hours ahead depending on both countries' DST states
• Dubai: 12 hours ahead in winter, 11 in summer
• Mumbai: 13.5 hours ahead in winter, 12.5 in summer

For exact conversions on any date, use our time zone converter — it automatically applies the correct DST rules for both zones on your selected date.

Which IANA Identifier Should I Use?

For anywhere in California, use America/Los_Angeles. This identifier covers the entire state and automatically handles both PST and PDT transitions. Avoid using the abbreviation "PST" in meeting invites — it only refers to the winter offset and can cause confusion if someone reads it during summer months.

Scheduling Meetings from California

If you are based in California and schedule calls with East Coast or European colleagues, morning meetings work best. A 9:00 AM Pacific call is noon in New York and 5:00 PM in London — within business hours for all three. For tips on managing these overlaps, see our cross-timezone scheduling guide or use the Meeting Planner to visualize the overlap.