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EST to JST Converter – Convert Eastern Time to Japan Time

Select your time and date, then see the conversion instantly
Example: When it's 9:00 AM in EST, it's:
11:00 PMJST (UTC+9)
JST is 14 hours ahead of EST during standard time.
Same-day example conversion

Quick Reference: JST is 14 hours ahead of EST (EDT during daylight saving). Japan does not observe daylight saving time.

Common EST to JST Conversions:
00:00 EST = 14:00 JST | 06:00 EST = 20:00 JST | 09:00 EST = 23:00 JST | 12:00 EST = 02:00 JST (next day) | 15:00 EST = 05:00 JST (next day) | 18:00 EST = 08:00 JST (next day)

Related conversions: JST to EST, UTC to JST, PST to JST, GMT to JST, IST to JST

Quick Time Zone Conversions

EST IST EST PST EST GMT EST UTC EST CST PST EST GMT IST IST EST CST IST PST GMT

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Time Offset
+14h
+13h when EST → EDT (Mar–Nov)
Date Line Crossover
After 10:00 AM EST
JST moves to the next calendar day
Daylight Saving
EST: Mar–Nov
JST: no DST - always UTC+9
Best Meeting Window
7–9 AM EST
= 9:00 PM–11:00 PM JST

Complete EST ↔ JST Conversion Table

All 24 hours · Both DST seasons · Best meeting windows marked ★

Best overlap Next day in JST
EST Time EST Standard Season  Standard
Nov–Mar  ·  UTC−5 → UTC+9  (+14h)		 EDT Daylight Season  EDT
Mar–Nov  ·  EDT → UTC+9  (+13h)
12:00 AM (midnight)2:00 PM1:00 PM
1:00 AM3:00 PM2:00 PM
2:00 AM4:00 PM3:00 PM
3:00 AM5:00 PM4:00 PM
4:00 AM6:00 PM5:00 PM
5:00 AM7:00 PM6:00 PM
6:00 AM8:00 PM7:00 PM
7:00 AM9:00 PM8:00 PM
8:00 AM10:00 PM9:00 PM
9:00 AM11:00 PM10:00 PM
10:00 AM+1 12:00 AM11:00 PM
11:00 AM+1 1:00 AM+1 12:00 AM
12:00 PM (noon)+1 2:00 AM+1 1:00 AM
1:00 PM+1 3:00 AM+1 2:00 AM
2:00 PM+1 4:00 AM+1 3:00 AM
3:00 PM+1 5:00 AM+1 4:00 AM
4:00 PM+1 6:00 AM+1 5:00 AM
5:00 PM+1 7:00 AM+1 6:00 AM
6:00 PM+1 8:00 AM+1 7:00 AM
7:00 PM+1 9:00 AM+1 8:00 AM
8:00 PM+1 10:00 AM+1 9:00 AM
9:00 PM+1 11:00 AM+1 10:00 AM
10:00 PM+1 12:00 PM+1 11:00 AM
11:00 PM+1 1:00 PM+1 12:00 PM
★ Best overlap: 7–9 AM EST / = 9:00 PM–11:00 PM JST +1 These times fall on the following calendar day

What is the time difference between EST and JST?

JST is 14 hours ahead of EST. When EST switches to EDT (March to November), the gap changes to 13 hours ahead of EDT. 9:00 AM EST = 11:00 PM JST. 12:00 PM EST = 2:00 AM (next day) JST. 5:00 PM EST = 7:00 AM (next day) JST.

What is the best time to call from New York to Tokyo?

There is no 9-to-5 business hours overlap between EST and JST. The typical compromise is early morning EST: 8:00 AM EST (10:00 PM JST), or late evening EST: 6:00 PM EST (8:00 AM (next day) JST). One side will be outside normal hours, so teams usually rotate who takes the off-hours call.

Frequently Asked Questions about EST and JST

JST is 14 hours ahead of EST, so to convert mentally, add 14 hours to your EST time. For example: 9:00 AM EST = 11:00 PM JST. Our converter automatically adjusts for Daylight Saving Time so you always get the right result.

JST (Japan Standard Time, UTC+9) is 14 hours ahead of EST (Eastern Standard Time, UTC-5) during standard time. For example, 9:00 AM EST = 11:00 PM JST. During DST periods, this difference changes by 1 hour when one or both zones observe Daylight Saving Time - our converter automatically applies the correct offset for any date you select.

JST is 14 hours ahead of EST, so standard 9–5 business hours do not overlap. The most practical window is early morning in EST (7–9 AM), which falls in the evening in JST - for example, 7:00 AM EST = 9:00 PM JST. Use our meeting planner to find the exact time for your date, especially around DST transitions.

Yes. EST (Eastern Standard Time) observes Daylight Saving Time. Clocks spring forward to EDT (UTC-4) on the second Sunday in March, and fall back to EST on the first Sunday in November. During the DST period, the difference with JST changes by 1 hour. Our converter always uses the current offset for the date you select.

Major cities in the EST (Eastern Standard Time, UTC-5) timezone include: New York, Boston, Miami, Atlanta, Washington DC, Philadelphia, Toronto. These cities switch to EDT (UTC-4) from the second Sunday in March to the first Sunday in November.

Major cities in the JST (Japan Standard Time, UTC+9) timezone include: Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Fukuoka. JST is a fixed-offset zone - these cities do not observe Daylight Saving Time.

JST is 14 hours ahead of EST. Because EST and JST are 14 hours apart, there is no standard business-hour overlap - plan for one side to take an early morning or late evening call. Always include both local times in calendar invites (for example, "2:00 PM EST / 4:00 AM JST (next day) JST"). Double-check around March and November (or March/October for European zones) when DST transitions can shift the offset by 1 hour. For full scheduling guidance, see our international meeting times guide.

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