JST to PST converter
PST is 16 hours behind JST for most of the year. The gap is different for part of the year, because only one side changes its clocks: in 2026 that is 1 January to 7 March (17 hours) and 1 November to 31 December (17 hours). If you schedule something in that period, check the date.
JST to PST conversion table
Every hour of the day in JST and what it is in PST. The columns use a January date and a July date, so you can see how daylight saving changes the answer.
| Time in JST | PST in January JST to PST | PST in July JST to PDT |
|---|---|---|
| 12 AM | 7:00 AM previous day | 8:00 AM previous day |
| 1 AM | 8:00 AM previous day | 9:00 AM previous day |
| 2 AM | 9:00 AM previous day | 10:00 AM previous day |
| 3 AM | 10:00 AM previous day | 11:00 AM previous day |
| 4 AM | 11:00 AM previous day | 12:00 PM previous day |
| 5 AM | 12:00 PM previous day | 1:00 PM previous day |
| 6 AM | 1:00 PM previous day | 2:00 PM previous day |
| 7 AM | 2:00 PM previous day | 3:00 PM previous day |
| 8 AM | 3:00 PM previous day | 4:00 PM previous day |
| 9 AM | 4:00 PM previous day | 5:00 PM previous day |
| 10 AM | 5:00 PM previous day | 6:00 PM previous day |
| 11 AM | 6:00 PM previous day | 7:00 PM previous day |
| 12 PM | 7:00 PM previous day | 8:00 PM previous day |
| 1 PM | 8:00 PM previous day | 9:00 PM previous day |
| 2 PM | 9:00 PM previous day | 10:00 PM previous day |
| 3 PM | 10:00 PM previous day | 11:00 PM previous day |
| 4 PM | 11:00 PM previous day | 12:00 AM |
| 5 PM | 12:00 AM | 1:00 AM |
| 6 PM | 1:00 AM | 2:00 AM |
| 7 PM | 2:00 AM | 3:00 AM |
| 8 PM | 3:00 AM | 4:00 AM |
| 9 PM | 4:00 AM | 5:00 AM |
| 10 PM | 5:00 AM | 6:00 AM |
| 11 PM | 6:00 AM | 7:00 AM |
How to convert JST to PST
To convert JST to PST by hand, subtract 16 hours for most of the year, then fix the date if you cross midnight.
- 8 PM JST on 15 January is 3:00 AM PST.
- 8 PM JST on 15 July is 4:00 AM PDT.
- On the other side of the year, 8 PM JST on 2 February is 3:00 AM PST, because the gap is then 17 hours.
- 8 PM JST on 15 October is 4:00 AM PDT.
About the two time zones
Japan Standard Time (JST). Used in: Tokyo, Osaka, Kyoto, Sapporo. No daylight saving: the offset is the same all year.
Pacific Time (PST/PDT). Used in: Los Angeles, San Francisco, Seattle, Portland, Vancouver. Clocks go forward on the second Sunday in March and back on the first Sunday in November.
People write PST all year round, even in summer when the clocks say PDT. This tool treats PST, PDT and PT as the same thing: the current time in Los Angeles.
Skip the converter: let Herewise do it on every page
Herewise is a free Chrome extension. When a page says "8 PM EST", "75°F" or "$49", it adds a small label with the time, temperature or price in your own time zone, units and currency. Free, no account, nothing you read leaves your browser.
Questions
What is 8 PM JST in PST?
8 PM JST on 15 January is 3:00 AM PST. 8 PM JST on 15 July is 4:00 AM PDT. On the other side of the year, 8 PM JST on 2 February is 3:00 AM PST, because the gap is then 17 hours.
Is PST ahead of or behind JST?
PST is 16 hours behind JST for most of the year. The gap is different for part of the year, because only one side changes its clocks: in 2026 that is 1 January to 7 March (17 hours) and 1 November to 31 December (17 hours). If you schedule something in that period, check the date.
Does daylight saving change the difference between JST and PST?
Yes. Japan Standard Time: No daylight saving: the offset is the same all year. Pacific Time: Clocks go forward on the second Sunday in March and back on the first Sunday in November.
How can I see JST times in my own time zone automatically?
Install Herewise, a free Chrome extension. When a web page says a time like 8 PM JST, it adds a small label with that time in your own time zone, using the correct date for daylight saving.