No overlap — one side will join outside working hours
EST (New York)
JST (Tokyo)
00:00
13:00Working
01:00
14:00Working
02:00
15:00Working
03:00
16:00Working
04:00
17:00
05:00
18:00
06:00
19:00
07:00
20:00
08:00
21:00
09:00Working
22:00off
10:00Working
23:00off
11:00Working
00:00+1doff
12:00Working
01:00+1doff
13:00Working
02:00+1doff
14:00Working
03:00+1doff
15:00Working
04:00+1doff
16:00Working
05:00+1doff
17:00
06:00+1d
18:00
07:00+1d
19:00
08:00+1d
20:00
09:00+1dWorking
21:00
10:00+1dWorking
22:00
11:00+1dWorking
23:00
12:00+1dWorking
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between est and jst?
Eastern Standard Time (est) is UTC-4 and Japan Standard Time (jst) is UTC+9. The difference between them is 13 hours.
Where is est used?
Eastern Standard Time (est) is used in USA and surrounding regions. The IANA timezone identifier is America/New_York.
Where is jst used?
Japan Standard Time (jst) is used in Japan and surrounding regions. The IANA timezone identifier is Asia/Tokyo.
How do I convert est to jst?
Use the interactive converter above. Drag the time slider to any est time and the jst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
EST (New York) is 13 hours behind JST (Tokyo). At noon in EST (New York), your contact in JST (Tokyo) sees 01:00.
EST (New York) is in the America/New_York timezone. JST (Tokyo) is in Asia/Tokyo. The difference is 13 hours.
Mutual working hours
EST (New York) and JST (Tokyo) have no shared working hours under a standard 9:00–17:00 schedule. One side will always need to join at an off-hour.
Recommended meeting windows
Since EST (New York) and JST (Tokyo) don't share working hours, these are the most practical options available.
16:00 New York / 05:00 Tokyo⚡ One side off-hours
⚠️ 4h before working hours in Tokyo
20:00 New York / 09:00 Tokyo⚡ One side off-hours
⚠️ 4h after working hours in New York
15:00 New York / 04:00 Tokyo⚡ One side off-hours
⚠️ 5h before working hours in Tokyo
Based on standard 09:00–17:00 working hours in each location's local time.
Public holidays for both locations
⚡ Holiday alerts for both locations, double-check schedules before confirming.
EST (New York)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
JST (Tokyo)7 holidays
Jul 20Marine Day
Aug 11Mountain Day
Sep 21Respect for the Aged Day
Sep 23Autumnal Equinox Day
Oct 12Sports Day
Scheduling between EST (New York) and JST (Tokyo)
EST (New York) (USA) and JST (Tokyo) (Japan) are 13 hours apart — far enough that standard 9–5 schedules do not overlap. Any real-time meeting means someone is joining outside their normal hours.
💡 Scheduling tips for these locations
⚡
When EST (New York) is at 16:00, JST (Tokyo) reads 05:00 — 4h before working hours in Tokyo.
⚡
When EST (New York) is at 20:00, JST (Tokyo) reads 09:00 — 4h after working hours in New York.
⚡
When EST (New York) is at 15:00, JST (Tokyo) reads 04:00 — 5h before working hours in Tokyo.
With no shared business hours, these slots distribute the scheduling burden as evenly as possible between both locations.
DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.
Use the time slider above to find the exact equivalent time for any moment in EST (New York). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.
