Tokyo to San Francisco (Pacific) — Time Zone Converter
JST (UTC+9) → PT (UTC-7). San Francisco (Pacific) is 16 hours behind relative to Tokyo right now.
Tokyo
Oct 7, 2026, 8:55 PM
San Francisco (Pacific)
Oct 7, 2026, 4:55 AM
Need the reverse? San Francisco (Pacific) to Tokyo →
Sample times — JST to PT
Sample conversions for today; daylight saving applied.
About Tokyo and San Francisco (Pacific)Tokyo vs San Francisco (Pacific) time difference through 2026
The gap changes twice during 2026, because only San Francisco (Pacific) observes daylight saving time. Double-check meetings booked in the weeks around each switch.
Dates (2026) JST PT Difference Jan 1 – Mar 7 UTC+9 UTC−8 San Francisco (Pacific) is 17 hours behind Mar 8 – Oct 31 UTC+9 UTC−7 San Francisco (Pacific) is 16 hours behind Nov 1 – Dec 31 UTC+9 UTC−8 San Francisco (Pacific) is 17 hours behind
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
Tokyo vs San Francisco (Pacific) time difference through 2026
The gap changes twice during 2026, because only San Francisco (Pacific) observes daylight saving time. Double-check meetings booked in the weeks around each switch.
| Dates (2026) | JST | PT | Difference |
|---|---|---|---|
| Jan 1 – Mar 7 | UTC+9 | UTC−8 | San Francisco (Pacific) is 17 hours behind |
| Mar 8 – Oct 31 | UTC+9 | UTC−7 | San Francisco (Pacific) is 16 hours behind |
| Nov 1 – Dec 31 | UTC+9 | UTC−8 | San Francisco (Pacific) is 17 hours behind |
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
Tokyo to San Francisco conversions place California nearly a day behind. A Tokyo morning update reaches San Francisco the previous afternoon, which is why release notes between the two are always dated in both zones.
Frequently asked questions
What is the time difference between Tokyo and San Francisco (Pacific)?
Right now the offset is about 16 hours behind (from JST to PT). Daylight saving rules differ by region, so use the converter and table above rather than memorising a single number year-round.
Does daylight saving affect Tokyo vs San Francisco (Pacific)?
Yes, whenever either region springs forward or falls back, the gap can shift by an hour. This page uses the IANA time-zone database so those transitions are applied automatically.
How do I schedule a meeting across Japan and the San Francisco Bay Area?
Pick a time in the converter, share both columns with attendees, and avoid early-morning or late-night slots on one side. The sample table lists common business hours in the source zone.
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