Convert Japan Standard Time to US Pacific Time, with daylight saving handled automatically.
Home row (top) sets the day. DST handled automatically via Intl.
Working hours (9–17)DaytimeNightNowSelected
JST to PST — Tokyo to Los Angeles time
Japan Standard Time (JST) is UTC+9 and never changes. US Pacific Time is PST (UTC-8) in winter and PDT (UTC-7) in summer, so Japan is 17 hours ahead in winter and 16 hours ahead in summer.
Period
Difference
Summer (US on PDT)
Japan is 16 hours ahead
Winter (US on PST)
Japan is 17 hours ahead
Japan and California overlap only at the edges: late afternoon in California (4–6 PM PT) is morning the next day in Japan (about 8–10 AM JST).
Frequently asked questions
What is the time difference between JST and PST?
Japan is 17 hours ahead of US Pacific Standard Time, and 16 hours ahead during US daylight saving (PDT). Japan does not observe DST.
What time is 9 AM PST in Japan?
9:00 AM PST is 2:00 AM JST the next day. During US daylight saving (PDT), 9:00 AM is 1:00 AM JST the next day.
Does Japan observe daylight saving time?
No. Japan uses JST (UTC+9) all year, so the difference changes only when the US switches its clocks.