This EST to JST converter turns any time in Eastern Standard Time (EST) into Japan Standard Time (JST), using your device clock so daylight saving is applied automatically. JST is 14 hours ahead of EST when both zones are on standard time, and 13 hours ahead during the summer months when clocks have shifted. EST is UTC−5 (EDT: UTC−4); JST is UTC+9.
EST covers New York, Toronto, Miami; JST covers Tokyo, Osaka. 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.
EST and JST UTC offsets
EST
UTC−5
Eastern Standard Time
EDT UTC−4 from March 8 to November 1, 2026
JST
UTC+9
Japan Standard Time
No daylight saving time
EST to JST conversion table (standard time)
| EST | JST |
|---|---|
| 12 am | 2 pm |
| 3 am | 5 pm |
| 6 am | 8 pm |
| 8 am | 10 pm |
| 9 am | 11 pm |
| 10 am | 12 amnext day |
| 11 am | 1 amnext day |
| 12 pm | 2 amnext day |
| 1 pm | 3 amnext day |
| 2 pm | 4 amnext day |
| 3 pm | 5 amnext day |
| 4 pm | 6 amnext day |
| 5 pm | 7 amnext day |
| 6 pm | 8 amnext day |
| 8 pm | 10 amnext day |
| 10 pm | 12 pmnext day |
EST to JST during daylight saving
Between the dates listed above, the difference is 13 hours instead of 14 hours.
| EST/EDT | JST |
|---|---|
| 12 am | 1 pm |
| 3 am | 4 pm |
| 6 am | 7 pm |
| 8 am | 9 pm |
| 9 am | 10 pm |
| 10 am | 11 pm |
| 11 am | 12 amnext day |
| 12 pm | 1 amnext day |
| 1 pm | 2 amnext day |
| 2 pm | 3 amnext day |
| 3 pm | 4 amnext day |
| 4 pm | 5 amnext day |
| 5 pm | 6 amnext day |
| 6 pm | 7 amnext day |
| 8 pm | 9 amnext day |
| 10 pm | 11 amnext day |
Frequently asked questions
What is the time difference between EST and JST?
JST is 14 hours ahead of EST on standard time. During daylight saving the gap changes to 13 hours. That comes from the UTC offsets: EST is UTC−5 and JST is UTC+9. For example, 9 am EST = 11 pm JST, and in summer 9 am EST = 10 pm JST.
Is JST ahead of or behind EST?
JST is 14 hours ahead of EST, so when it is noon in EST it is 2 am in JST the next day. Ahead means the clock there already shows a later time; a call at 5 pm EST lands at 7 am JST.
Does EST or JST observe daylight saving time in 2026?
EST switches to EDT (UTC−4) on March 8 and back on November 1 in 2026. JST keeps UTC+9 all year. 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 EST and JST?
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 EST = 10 pm JST and 6 pm EST = 8 am JST the next day. Rotate the inconvenient slot between the two sides for recurring calls.
Which cities use EST and JST?
EST (Eastern Standard Time) is used in New York, Toronto, Miami, Atlanta. JST (Japan Standard Time) is used in Tokyo, Osaka. Some cities inside a zone skip daylight saving, noted in parentheses, so their offset matches only part of the year.