Timezone conversion
JST to EST: current time and meeting overlap.
Quick answer: JST is 13 hours ahead of EST. No overlap between JST and EST for the selected working hours.
JST UTC+9 · GMT+9
2:20 AM EST UTC-4 · EDT
1:20 PM
overlap
No standard overlap
none This page maps EST searches to New York timezone rules so daylight-saving dates may display EDT.
Suggested meeting window
No standard 60-minute window fits both workdays.
Planning guide Best times and checks before sending. Show Hide
What to do with this timezone conversion.
Use this page when you have a specific JST time and need the matching EST time before sending it to someone else. This page maps EST searches to New York timezone rules so daylight-saving dates may display EDT.
1
Use the converter for the exact JST time, then check whether the resulting EST time is still reasonable for a person.
2
For launch, webinar, support, or incident work, copy the converted time with the date because the target side may land on a different day.
3
When several people are involved, move from conversion to the meeting planner before committing the time.
When this page is useful
Real situations for JST to EST.
These notes focus on the scheduling or conversion mistakes people actually make before sending a time.
Japan time for Eastern recipients
Use JST to EST when Japan sends a customer call, release window, or handoff time and the US Eastern side needs the local reading.
Previous-day risk
Watch the date rollover: Japan-to-Eastern conversions often land on the previous day for the Eastern recipient.
Customer escalation handoff
Use JST to EST when a Japan escalation is handed to a US-East team and the written note must preserve both local dates.
Scheduling workflow Show Hide
Include the date and both local times.
Suggested conversion note: confirm the selected JST time, copy the matching EST time, and include the date if the result crosses midnight.
Confirm the date
Pick the actual date first so JST to EST reflects daylight-saving rules for that day.
Check the overlap
A correct conversion can still be a bad meeting time. If a real person must attend, check the overlap before sending.
Share both sides
Send the JST time and the EST time together so nobody has to recalculate.
Reference table Hourly conversion table Show Hide
| JST | 24h | EST | 24h | Date |
|---|---|---|---|---|
| 12:00 AM | 00:00 | 11:00 AM | 11:00 | -1 day |
| 1:00 AM | 01:00 | 12:00 PM | 12:00 | -1 day |
| 2:00 AM | 02:00 | 1:00 PM | 13:00 | -1 day |
| 3:00 AM | 03:00 | 2:00 PM | 14:00 | -1 day |
| 4:00 AM | 04:00 | 3:00 PM | 15:00 | -1 day |
| 5:00 AM | 05:00 | 4:00 PM | 16:00 | -1 day |
| 6:00 AM | 06:00 | 5:00 PM | 17:00 | -1 day |
| 7:00 AM | 07:00 | 6:00 PM | 18:00 | -1 day |
| 8:00 AM | 08:00 | 7:00 PM | 19:00 | -1 day |
| 9:00 AM | 09:00 | 8:00 PM | 20:00 | -1 day |
| 10:00 AM | 10:00 | 9:00 PM | 21:00 | -1 day |
| 11:00 AM | 11:00 | 10:00 PM | 22:00 | -1 day |
Related timezone pages
Keep comparing without starting over.
Timezone questions answered
How do I convert JST to EST?
Select the JST date and time in the converter, and useChrono will show the matching EST time with same-day or date-rollover context. This page maps EST searches to New York timezone rules so daylight-saving dates may display EDT.
How accurate is this timezone page?
useChrono uses IANA timezone identifiers through the browser and platform Intl API, so daylight-saving changes are reflected when the runtime timezone data is current.
Should I use the converter or the meeting planner?
Use the converter for one exact time. Use the meeting planner when the time needs to be fair for people in both locations.
Why should I include both local times in an invite?
Calendar apps can display times in the viewer timezone. Including both local times reduces mistakes for remote teams and cross-region handoffs.
Data note: useChrono uses IANA timezone identifiers and the platform Intl API. Daylight-saving rules can change, so confirm mission-critical times in your calendar system.