JST vs EST
Japan Standard Time (JST) is UTC+9 year-round. Eastern Time (US & Canada) (EST/EDT) is UTC−5 in winter and UTC−4 in summer.
Because Eastern Time (US & Canada) observes daylight saving and the other zone does not, the gap changes during the year: 14 hours behind in the northern winter and 13 hours behind in summer, with a few weeks in spring and autumn where it's an hour different again. The converter uses the exact rules for the date you choose.
JST to EST conversion table
Summer (daylight saving) times, mid-July:
| JST | EST/EDT |
|---|---|
| 12:00 AM | 11:00 AM (−1 day) |
| 6:00 AM | 5:00 PM (−1 day) |
| 8:00 AM | 7:00 PM (−1 day) |
| 9:00 AM | 8:00 PM (−1 day) |
| 10:00 AM | 9:00 PM (−1 day) |
| 12:00 PM | 11:00 PM (−1 day) |
| 2:00 PM | 1:00 AM |
| 3:00 PM | 2:00 AM |
| 5:00 PM | 4:00 AM |
| 6:00 PM | 5:00 AM |
| 8:00 PM | 7:00 AM |
| 10:00 PM | 9:00 AM |
Winter (standard) times, mid-January:
| JST | EST |
|---|---|
| 12:00 AM | 10:00 AM (−1 day) |
| 6:00 AM | 4:00 PM (−1 day) |
| 8:00 AM | 6:00 PM (−1 day) |
| 9:00 AM | 7:00 PM (−1 day) |
| 10:00 AM | 8:00 PM (−1 day) |
| 12:00 PM | 10:00 PM (−1 day) |
| 2:00 PM | 12:00 AM |
| 3:00 PM | 1:00 AM |
| 5:00 PM | 3:00 AM |
| 6:00 PM | 4:00 AM |
| 8:00 PM | 6:00 AM |
| 10:00 PM | 8:00 AM |
Scheduling between JST and EST
With 13 hours between them there is little or no overlap in normal working hours; one side will be early morning or evening. 8 AM JST is 7:00 PM EST (−1 day), and 6 PM JST is 5:00 AM EST. Always write the city alongside the abbreviation in invites — several abbreviations (CST, IST, AST) are used by more than one region.
Related conversions
PST to EST · EST to PST · CST to EST · EST to CST · MST to EST · EST to MST · EST to AST · AST to EST · UTC to EST · EST to UTC · all zones