PST ↔ JST Time Converter

Japan Standard Time (JST) is 17h ahead of Pacific Standard Time (PST). PST runs at UTC-8 / UTC-7 (PDT) and JST at UTC+9. Quick time examples: 8:00 AM PST = 1:00 AM JST; 12:00 PM PST = 5:00 AM JST; 5:00 PM PST = 10:00 AM JST.

To convert PST to JST, add 17 hours to the PST time. For example, 12:00 PM PST becomes 5:00 AM JST. When the result crosses midnight, advance the date by one day (shown as "+1 Day" in the converter). The converter on this page handles all arithmetic and date-rollover automatically.

Japan Standard Time (JST) is 17h ahead of Pacific Standard Time (PST). Reversed: PST is 17h behind of JST. Practical example: noon in Tokyo (12:00 PM JST) corresponds to 7:00 PM PST in Los Angeles, and 5 PM in Tokyo corresponds to 12:00 AM PST.

Pacific Standard Time (PST) is the standard civil time for Los Angeles and the surrounding region, operating at UTC-8 / UTC-7 (PDT) from UTC. It observes Daylight Saving Time and advances its clocks by one hour during summer — the effective offset changes seasonally. Major cities: Los Angeles, San Francisco, Seattle, Portland, San Diego, Las Vegas, Vancouver.

Japan Standard Time (JST) covers Tokyo and the surrounding region at UTC+9 from UTC. It does not observe Daylight Saving Time — the offset is fixed at UTC+9 all year with no seasonal change. Cities in this zone: Tokyo, Osaka, Kyoto, Yokohama, Nagoya, Sapporo, Fukuoka.

Yes. PST observes Daylight Saving Time and moves its clocks by one hour in summer, while JST stays fixed at UTC+9 all year. This means the offset between the two zones shifts by one hour when PST enters or exits its DST period. The live converter on this page always shows the current accurate offset.

The best meeting window is where standard working hours (9 AM – 6 PM) overlap in both zones. Since JST is 17h ahead of PST, mornings in the earlier zone align with afternoons or evenings in the later zone. Target 8 AM – 11 AM in the earlier-offset zone to keep both sides in reasonable hours. The meeting hours table above shows the exact recommended slots for this pair. Any time where one side falls before 7 AM or after 9 PM is best avoided for regular team calls.

Type any time directly into the JST field in the bidirectional converter above — it instantly shows the PST result. Alternatively, subtract 17 hours from the JST time manually. For a dedicated reverse page, visit: JST to PST converter ↗.

Yes — this is a large offset, and many hours will cross midnight. When the converted time passes 11:59 PM, the date advances — the converter shows "+1 Day". When it goes before 12:00 AM, the date moves back — "-1 Day" appears. The 24-hour reference table also shows day changes in the Day column. Always check the date indicator when sending calendar invites across these two zones to avoid accidentally booking on the wrong date.

Pacific Standard Time (PST) is used in: Los Angeles, San Francisco, Seattle, Portland, San Diego, Las Vegas, Vancouver. The zone operates at UTC-8 / UTC-7 (PDT)and shifts by one hour during DST.

Japan Standard Time (JST) covers: Tokyo, Osaka, Kyoto, Yokohama, Nagoya, Sapporo, Fukuoka. It runs at UTC+9, fixed year-round with no DST change. Use the live clocks at the top of this page to see the current local time in both zones side by side.

The standard offset is 17h ahead, but this can shift by one hour during DST transition periods. When PST moves to or from its daylight variant, the gap changes. The live converter always shows the current accurate offset.

When creating a recurring meeting that spans PST and JST, set the event timezone in your calendar app using the IANA timezone names: America/Los_Angeles for PST and Asia/Tokyo for JST. Using IANA names rather than fixed UTC offsets ensures the calendar app automatically adjusts future occurrences for any DST changes, so you never accidentally schedule at the wrong time after a clock transition. For a quick lookup of any specific time, the converter on this page is the fastest way to verify both sides before you send the invite.

PST (Pacific Standard Time) is UTC-8 and applies during winter, roughly from early November to mid-March. PDT (Pacific Daylight Time) is UTC-7 and applies during summer when the US West Coast moves its clocks forward by one hour. In everyday speech, people often say "PST" year-round even when technically on PDT. The live clocks and converter on this page use the America/Los_Angeles IANA zone, which automatically switches between PST and PDT based on the current date — so you always see the correct offset without needing to track the transition yourself.

No. Japan abolished Daylight Saving Time in 1951 and has not used it since. Japan Standard Time (JST) is fixed at UTC+9 every day of the year without exception. This makes JST one of the most predictable zones for international scheduling — the JST offset never changes, so a recurring PST–JST meeting will always occur at the same relative time.