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Specific time, zone to zone

9:00 am PST to JST — 2:00 am (next day) JST

9:00 am Pacific Time (PST) is 2:00 am (next day) Japan Standard Time (JST) while both regions are on standard time. During the daylight saving period the answer becomes 1:00 am (next day), because one of the two zones shifts its clocks and the other does not.

Standard time

2:00 am (next day)

Applies while neither zone is on daylight saving — broadly November to March in the northern hemisphere.

Daylight saving

1:00 am (next day)

Applies while the clocks are forward. This pair does not keep a constant gap, so check the date.

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How the two zones line up

Pacific Time runs at UTC−8 in winter and UTC−7 in summer. Japan Standard Time runs at UTC+9 and UTC+9 respectively. Take the difference between the two, add it to 9:00 am, and you get the local time on the other side.

Daylight saving

This pair is one of the awkward ones: the gap between the two zones is not constant, so a meeting booked in one season drifts by an hour in the other. Diary invitations sent as a fixed clock time rather than as a calendar event are the usual casualty.

Where this conversion gets used

  • Offshore development stand-ups
  • overnight support handovers
  • outsourced finance teams
  • supplier calls

PST to JST — every hour

Both columns are computed from the IANA database, so they follow the real transition dates.

PSTJST — standardJST — daylight saving
12:00 am5:00 pm4:00 pm
1:00 am6:00 pm5:00 pm
2:00 am7:00 pm6:00 pm
3:00 am8:00 pm7:00 pm
4:00 am9:00 pm8:00 pm
5:00 am10:00 pm9:00 pm
6:00 am11:00 pm10:00 pm
7:00 am12:00 am (next day)11:00 pm
8:00 am1:00 am (next day)12:00 am (next day)
9:00 am2:00 am (next day)1:00 am (next day)
10:00 am3:00 am (next day)2:00 am (next day)
11:00 am4:00 am (next day)3:00 am (next day)
12:00 pm5:00 am (next day)4:00 am (next day)
1:00 pm6:00 am (next day)5:00 am (next day)
2:00 pm7:00 am (next day)6:00 am (next day)
3:00 pm8:00 am (next day)7:00 am (next day)
4:00 pm9:00 am (next day)8:00 am (next day)
5:00 pm10:00 am (next day)9:00 am (next day)
6:00 pm11:00 am (next day)10:00 am (next day)
7:00 pm12:00 pm (next day)11:00 am (next day)
8:00 pm1:00 pm (next day)12:00 pm (next day)
9:00 pm2:00 pm (next day)1:00 pm (next day)
10:00 pm3:00 pm (next day)2:00 pm (next day)
11:00 pm4:00 pm (next day)3:00 pm (next day)

Questions people ask

2:00 am (next day) JST during standard time, and 1:00 am (next day) while daylight saving is in effect. Check which period the date falls in before you commit to a slot.

Related conversions

10:00 am PST to JST11:00 am PST to JST7:00 am PST to JST8:00 am PST to JST

All conversions →

Booking something recurring?

A fixed clock time drifts when either side changes its clocks. Our guides explain how to stop that happening.

Read the DST guidePlan a meeting