Zone & HourPDT to JST Time Converter
JST is 16 hours ahead of PDT.
PDT: Pacific Daylight Time, UTC−07:00.
JST: Japan Standard Time, UTC+09:00.
For a city that changes clocks, use the date-aware city converter.
Convert a time
9:00 AM PDT = 1:00 AM JST (next day)
24-hour PDT to JST conversion table
These are fixed-offset examples. They apply whenever the two abbreviations have the exact meanings stated above.
| PDT · UTC−07:00 | JST · UTC+09:00 | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | Same day |
| 1:00 AM | 5:00 PM | Same day |
| 2:00 AM | 6:00 PM | Same day |
| 3:00 AM | 7:00 PM | Same day |
| 4:00 AM | 8:00 PM | Same day |
| 5:00 AM | 9:00 PM | Same day |
| 6:00 AM | 10:00 PM | Same day |
| 7:00 AM | 11:00 PM | Same day |
| 8:00 AM | 12:00 AM | Next day |
| 9:00 AM | 1:00 AM | Next day |
| 10:00 AM | 2:00 AM | Next day |
| 11:00 AM | 3:00 AM | Next day |
| 12:00 PM | 4:00 AM | Next day |
| 1:00 PM | 5:00 AM | Next day |
| 2:00 PM | 6:00 AM | Next day |
| 3:00 PM | 7:00 AM | Next day |
| 4:00 PM | 8:00 AM | Next day |
| 5:00 PM | 9:00 AM | Next day |
| 6:00 PM | 10:00 AM | Next day |
| 7:00 PM | 11:00 AM | Next day |
| 8:00 PM | 12:00 PM | Next day |
| 9:00 PM | 1:00 PM | Next day |
| 10:00 PM | 2:00 PM | Next day |
| 11:00 PM | 3:00 PM | Next day |
What PDT and JST mean
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.
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.
Common conversion examples
- 6:00 AM PDT becomes 10:00 PM JST.
- 9:00 AM PDT becomes 1:00 AM JST on the next day.
- 12:00 PM PDT becomes 4:00 AM JST on the next day.
- 6:00 PM PDT becomes 10:00 AM JST on the next day.
- 9:00 PM PDT becomes 1:00 PM JST on the next day.
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. 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.