EST vs JST
Eastern Time (US & Canada) (EST/EDT) is UTC−5 in winter and UTC−4 in summer. Japan Standard Time (JST) is UTC+9 year-round.
Because Eastern Time (US & Canada) observes daylight saving and the other zone does not, the gap changes during the year: 14 hours ahead in the northern winter and 13 hours ahead 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.
EST to JST conversion table
Summer (daylight saving) times, mid-July:
| EST/EDT | JST |
|---|---|
| 12:00 AM | 1:00 PM |
| 6:00 AM | 7:00 PM |
| 8:00 AM | 9:00 PM |
| 9:00 AM | 10:00 PM |
| 10:00 AM | 11:00 PM |
| 12:00 PM | 1:00 AM (+1 day) |
| 2:00 PM | 3:00 AM (+1 day) |
| 3:00 PM | 4:00 AM (+1 day) |
| 5:00 PM | 6:00 AM (+1 day) |
| 6:00 PM | 7:00 AM (+1 day) |
| 8:00 PM | 9:00 AM (+1 day) |
| 10:00 PM | 11:00 AM (+1 day) |
Winter (standard) times, mid-January:
| EST | JST |
|---|---|
| 12:00 AM | 2:00 PM |
| 6:00 AM | 8:00 PM |
| 8:00 AM | 10:00 PM |
| 9:00 AM | 11:00 PM |
| 10:00 AM | 12:00 AM (+1 day) |
| 12:00 PM | 2:00 AM (+1 day) |
| 2:00 PM | 4:00 AM (+1 day) |
| 3:00 PM | 5:00 AM (+1 day) |
| 5:00 PM | 7:00 AM (+1 day) |
| 6:00 PM | 8:00 AM (+1 day) |
| 8:00 PM | 10:00 AM (+1 day) |
| 10:00 PM | 12:00 PM (+1 day) |
Scheduling between EST and JST
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 EST is 9:00 PM JST, and 6 PM EST is 7:00 AM JST (+1 day). 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