This JST to EST converter turns any time in Japan Standard Time (JST) into Eastern Standard Time (EST), using your device clock so daylight saving is applied automatically. EST is 14 hours behind JST when both zones are on standard time, and 13 hours behind during the summer months when clocks have shifted. JST is UTC+9; EST is UTC−5 (EDT: UTC−4).
JST covers Tokyo, Osaka; EST covers New York, Toronto, Miami. Because only EST observes daylight saving time, the difference is not constant through the year. The tables below show both cases, and the converter at the top always uses the rule in force on the date you pick.
JST and EST UTC offsets
JST
UTC+9
Japan Standard Time
No daylight saving time
EST
UTC−5
Eastern Standard Time
EDT UTC−4 from March 8 to November 1, 2026
JST to EST conversion table (standard time)
| JST | EST |
|---|---|
| 12 am | 10 amprevious day |
| 3 am | 1 pmprevious day |
| 6 am | 4 pmprevious day |
| 8 am | 6 pmprevious day |
| 9 am | 7 pmprevious day |
| 10 am | 8 pmprevious day |
| 11 am | 9 pmprevious day |
| 12 pm | 10 pmprevious day |
| 1 pm | 11 pmprevious day |
| 2 pm | 12 am |
| 3 pm | 1 am |
| 4 pm | 2 am |
| 5 pm | 3 am |
| 6 pm | 4 am |
| 8 pm | 6 am |
| 10 pm | 8 am |
JST to EST during daylight saving
Between the dates listed above, the difference is 13 hours instead of 14 hours.
| JST | EST/EDT |
|---|---|
| 12 am | 11 amprevious day |
| 3 am | 2 pmprevious day |
| 6 am | 5 pmprevious day |
| 8 am | 7 pmprevious day |
| 9 am | 8 pmprevious day |
| 10 am | 9 pmprevious day |
| 11 am | 10 pmprevious day |
| 12 pm | 11 pmprevious day |
| 1 pm | 12 am |
| 2 pm | 1 am |
| 3 pm | 2 am |
| 4 pm | 3 am |
| 5 pm | 4 am |
| 6 pm | 5 am |
| 8 pm | 7 am |
| 10 pm | 9 am |
Frequently asked questions
What is the time difference between JST and EST?
EST is 14 hours behind JST on standard time. During daylight saving the gap changes to 13 hours. That comes from the UTC offsets: JST is UTC+9 and EST is UTC−5. For example, 9 am JST = 7 pm EST the previous day, and in summer 9 am JST = 8 pm EST the previous day.
Is EST ahead of or behind JST?
EST is 14 hours behind JST, so when it is noon in JST it is 10 pm in EST the previous day. Ahead means the clock there already shows a later time; a call at 5 pm JST lands at 3 am EST.
Does JST or EST observe daylight saving time in 2026?
JST keeps UTC+9 all year. EST switches to EDT (UTC−4) on March 8 and back on November 1. Between those dates the difference in the table above shifts by an hour, which is the usual cause of missed calls in spring and autumn.
What is the best time for a meeting between JST and EST?
Office hours (9 am to 5 pm) do not overlap at all with a 14 hours difference. The least painful options are early morning in EST or early evening in JST; for example 8 am JST = 6 pm EST the previous day and 6 pm JST = 4 am EST. Rotate the inconvenient slot between the two sides for recurring calls.
Which cities use JST and EST?
JST (Japan Standard Time) is used in Tokyo, Osaka. EST (Eastern Standard Time) is used in New York, Toronto, Miami, Atlanta. Some cities inside a zone skip daylight saving, noted in parentheses, so their offset matches only part of the year.