EST to JST converter
JST is 13 hours ahead of EST 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 (14 hours) and 1 November to 31 December (14 hours). If you schedule something in that period, check the date.
EST to JST conversion table
Every hour of the day in EST and what it is in JST. The columns use a January date and a July date, so you can see how daylight saving changes the answer.
| Time in EST | JST in January EST to JST | JST in July EDT to JST |
|---|---|---|
| 12 AM | 2:00 PM | 1:00 PM |
| 1 AM | 3:00 PM | 2:00 PM |
| 2 AM | 4:00 PM | 3:00 PM |
| 3 AM | 5:00 PM | 4:00 PM |
| 4 AM | 6:00 PM | 5:00 PM |
| 5 AM | 7:00 PM | 6:00 PM |
| 6 AM | 8:00 PM | 7:00 PM |
| 7 AM | 9:00 PM | 8:00 PM |
| 8 AM | 10:00 PM | 9:00 PM |
| 9 AM | 11:00 PM | 10:00 PM |
| 10 AM | 12:00 AM next day | 11:00 PM |
| 11 AM | 1:00 AM next day | 12:00 AM next day |
| 12 PM | 2:00 AM next day | 1:00 AM next day |
| 1 PM | 3:00 AM next day | 2:00 AM next day |
| 2 PM | 4:00 AM next day | 3:00 AM next day |
| 3 PM | 5:00 AM next day | 4:00 AM next day |
| 4 PM | 6:00 AM next day | 5:00 AM next day |
| 5 PM | 7:00 AM next day | 6:00 AM next day |
| 6 PM | 8:00 AM next day | 7:00 AM next day |
| 7 PM | 9:00 AM next day | 8:00 AM next day |
| 8 PM | 10:00 AM next day | 9:00 AM next day |
| 9 PM | 11:00 AM next day | 10:00 AM next day |
| 10 PM | 12:00 PM next day | 11:00 AM next day |
| 11 PM | 1:00 PM next day | 12:00 PM next day |
How to convert EST to JST
To convert EST to JST by hand, add 13 hours for most of the year, then fix the date if you cross midnight.
- 8 PM EST on 15 January is 10:00 AM JST the next day.
- 8 PM EDT on 15 July is 9:00 AM JST the next day.
- On the other side of the year, 8 PM EST on 2 February is 10:00 AM JST the next day, because the gap is then 14 hours.
- 8 PM EDT on 15 October is 9:00 AM JST the next day.
About the two time zones
Eastern Time (EST/EDT). Used in: New York, Toronto, Miami, Atlanta, Boston, Washington DC. Clocks go forward on the second Sunday in March and back on the first Sunday in November.
People write EST all year round, even in summer when the clocks actually say EDT. This tool treats EST, EDT and ET as the same thing: the current time in New York.
Japan Standard Time (JST). Used in: Tokyo, Osaka, Kyoto, Sapporo. No daylight saving: the offset is the same all year.
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 EST in JST?
8 PM EST on 15 January is 10:00 AM JST the next day. 8 PM EDT on 15 July is 9:00 AM JST the next day. On the other side of the year, 8 PM EST on 2 February is 10:00 AM JST the next day, because the gap is then 14 hours.
Is JST ahead of or behind EST?
JST is 13 hours ahead of EST 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 (14 hours) and 1 November to 31 December (14 hours). If you schedule something in that period, check the date.
Does daylight saving change the difference between EST and JST?
Yes. Eastern Time: Clocks go forward on the second Sunday in March and back on the first Sunday in November. Japan Standard Time: No daylight saving: the offset is the same all year.
How can I see EST times in my own time zone automatically?
Install Herewise, a free Chrome extension. When a web page says a time like 8 PM EST, it adds a small label with that time in your own time zone, using the correct date for daylight saving.