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JST to PDT Time Converter

PDT is 16 hours behind of JST.

These abbreviations mean fixed UTC offsets.

JST: Japan Standard Time, UTC+09:00.
PDT: Pacific Daylight Time, UTC−07:00.

For a city that changes clocks, use the date-aware city converter.

Convert a time

9:00 AM JST = 5:00 PM PDT (previous day)

24-hour JST to PDT conversion table

These are fixed-offset examples. They apply whenever the two abbreviations have the exact meanings stated above.

JST · UTC+09:00PDT · UTC−07:00Day
12:00 AM8:00 AMPrevious day
1:00 AM9:00 AMPrevious day
2:00 AM10:00 AMPrevious day
3:00 AM11:00 AMPrevious day
4:00 AM12:00 PMPrevious day
5:00 AM1:00 PMPrevious day
6:00 AM2:00 PMPrevious day
7:00 AM3:00 PMPrevious day
8:00 AM4:00 PMPrevious day
9:00 AM5:00 PMPrevious day
10:00 AM6:00 PMPrevious day
11:00 AM7:00 PMPrevious day
12:00 PM8:00 PMPrevious day
1:00 PM9:00 PMPrevious day
2:00 PM10:00 PMPrevious day
3:00 PM11:00 PMPrevious day
4:00 PM12:00 AMSame day
5:00 PM1:00 AMSame day
6:00 PM2:00 AMSame day
7:00 PM3:00 AMSame day
8:00 PM4:00 AMSame day
9:00 PM5:00 AMSame day
10:00 PM6:00 AMSame day
11:00 PM7:00 AMSame day

What JST and PDT mean

JST: Japan Standard Time

JST is UTC+09:00. Tokyo currently keeps this offset throughout the year. A representative location is Tokyo, whose IANA identifier is Asia/Tokyo.

PDT: Pacific Daylight Time

PDT is the UTC−07:00 daylight-saving offset in the North American Pacific region, not a year-round city time zone. A representative location is Los Angeles in summer, whose IANA identifier is America/Los_Angeles.

Common conversion examples

  • 6:00 AM JST becomes 2:00 PM PDT on the previous day.
  • 9:00 AM JST becomes 5:00 PM PDT on the previous day.
  • 12:00 PM JST becomes 8:00 PM PDT on the previous day.
  • 6:00 PM JST becomes 2:00 AM PDT.
  • 9:00 PM JST becomes 5:00 AM PDT.

Frequently asked questions

Does this table change for daylight saving?

No. The offsets attached to these abbreviations stay fixed. A city may switch to a differently named abbreviation. JST is not a daylight-saving designation in the interpretation used here. PDT is a daylight-saving designation.

Should I put an abbreviation in a meeting invitation?

Use an IANA city time zone and a full date. Abbreviations are useful shorthand when everyone agrees on the meaning, but they do not carry the complete rules that a calendar needs for recurring events.

Why can the day change?

The difference is 960 minutes. Adding or subtracting that amount can move the destination time before midnight or beyond the end of the source day. The last column makes that change explicit.

Related tools

Plan a meeting in these regionsUnderstand ambiguous abbreviationsPDT to JST converterAll time-zone conversions