Convert any time between JST and PST, with a full 24-hour table and the hours when both sides are actually at work.

JST to PST Time Converter

PST is 16 hours behind JST. JST is UTC+9:00, and The US West Coast is currently on PDT (UTC-7:00).

Worth knowing right now. The US West Coast is currently on PDT, not PST, because daylight saving is in effect. The 16 hours above is the gap between those two regions today, which is almost certainly what you want. Taken strictly as written, JST to PST is 17 hours.
JST
Japan Standard Time
11:17:39 PM
Sunday, October 11, 2026
UTC+9:00
-16:00
hours difference
⇆ Reverse
PST
Pacific Standard Time
07:17:39 AM
Sunday, October 11, 2026
UTC-7:00

Best Time to Call Between JST and PST

Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 2:00 PM JST, which is 3:00 PM to 10:00 PM PST.

both at work JST only PST only neither  —  hours along the strip are JST.

JST to PST: Full 24-Hour Conversion Table

Shaded rows are working hours; the darker shade marks the hours when both zones are at work.

JSTPSTWorking hours
12:00 AM 8:00 AM prev day —
1:00 AM 9:00 AM prev day PST only
2:00 AM 10:00 AM prev day PST only
3:00 AM 11:00 AM prev day PST only
4:00 AM 12:00 PM prev day PST only
5:00 AM 1:00 PM prev day PST only
6:00 AM 2:00 PM prev day PST only
7:00 AM 3:00 PM prev day PST only
8:00 AM 4:00 PM prev day PST only
9:00 AM 5:00 PM prev day JST only
10:00 AM 6:00 PM prev day JST only
11:00 AM 7:00 PM prev day JST only
12:00 PM 8:00 PM prev day JST only
1:00 PM 9:00 PM prev day JST only
2:00 PM 10:00 PM prev day JST only
3:00 PM 11:00 PM prev day JST only
4:00 PM 12:00 AM JST only
5:00 PM 1:00 AM —
6:00 PM 2:00 AM —
7:00 PM 3:00 AM —
8:00 PM 4:00 AM —
9:00 PM 5:00 AM —
10:00 PM 6:00 AM —
11:00 PM 7:00 AM —

What JST and PST Actually Are

JST — Japan Standard Time

Tokyo, Osaka, Yokohama, Nagoya, Sapporo. Standing at UTC+9:00 as written, and the region does not change its clocks, so that offset holds all year. Japan does not observe daylight saving, so this offset is fixed year-round.

Japan abolished daylight saving in 1952 and has resisted every attempt to reintroduce it, including a proposal around the 2020 Olympics.

PST — Pacific Standard Time

Los Angeles, San Francisco, Seattle, Las Vegas, Vancouver. Standing at UTC-8:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to PST. The Philippines occasionally uses PST for Philippine Standard Time (UTC+8); PHT is the clearer label for that.

California voted in 2018 to move to permanent daylight time, but the change needs an act of Congress and has never happened, so PST is still the winter standard.

What This Means in Practice

The date changes mid-working-day

For 7 of the eight hours in a normal JST working day, the equivalent PST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.

This gap is not fixed

PST changes its clocks and JST does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.

Nearly opposite sides of the clock

At 16 hours apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.

Frequently Asked Questions

What is the time difference between JST and PST?

PST is 16 hours behind JST. That is the live figure. Taken strictly as written, the gap between JST and PST is 17 hours — the two differ because at least one of these regions is currently on daylight saving.

What is 9:00 AM JST in PST?

9:00 AM JST is 5:00 PM the previous day PST.

What are the best hours to schedule a call between JST and PST?

Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 7:00 AM to 2:00 PM JST, which is 3:00 PM to 10:00 PM PST.

Does the difference between JST and PST change during the year?

Yes. PST observes daylight saving and JST does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.

Does JST always mean Japan Standard Time?

Japan does not observe daylight saving, so this offset is fixed year-round.

Does PST always mean Pacific Standard Time?

The Philippines occasionally uses PST for Philippine Standard Time (UTC+8); PHT is the clearer label for that.

Converting between two time zones regularly? Bookmark this page — the clocks update live and the table follows daylight saving automatically.