San Francisco (Pacific) to Tokyo — Time Zone Converter
PT (UTC-7) → JST (UTC+9). Tokyo is 16 hours ahead relative to San Francisco (Pacific) right now.
San Francisco (Pacific)
Oct 7, 2026, 4:55 AM
Tokyo
Oct 7, 2026, 8:55 PM
Need the reverse? Tokyo to San Francisco (Pacific) →
Sample times — PT to JST
Sample conversions for today; daylight saving applied.
About San Francisco (Pacific) and TokyoSan Francisco (Pacific) vs Tokyo 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) PT JST Difference Jan 1 – Mar 7 UTC−8 UTC+9 Tokyo is 17 hours ahead Mar 8 – Oct 31 UTC−7 UTC+9 Tokyo is 16 hours ahead Nov 1 – Dec 31 UTC−8 UTC+9 Tokyo is 17 hours ahead
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
San Francisco (Pacific) vs Tokyo 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) | PT | JST | Difference |
|---|---|---|---|
| Jan 1 – Mar 7 | UTC−8 | UTC+9 | Tokyo is 17 hours ahead |
| Mar 8 – Oct 31 | UTC−7 | UTC+9 | Tokyo is 16 hours ahead |
| Nov 1 – Dec 31 | UTC−8 | UTC+9 | Tokyo is 17 hours ahead |
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
San Francisco to Tokyo is 16 hours in winter and 17 in summer. A large share of trans-Pacific tech collaboration runs on this corridor, using a San Francisco afternoon that lands in the Tokyo morning of the next day.
Frequently asked questions
What is the time difference between San Francisco (Pacific) and Tokyo?
Right now the offset is about 16 hours ahead (from PT to JST). 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 San Francisco (Pacific) vs Tokyo?
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 the San Francisco Bay Area and Japan?
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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