What time is it in EDT when it is noon in JST?

When it is 12:00 noon in Japan Standard Time (JST), it is 22:00 (Mon) in Eastern Daylight Time (EDT) right now. The exact value can change by an hour at daylight saving transitions, so always compute against today's date.

Are EDT and JST the same time zone?

No. EDT (Eastern Daylight Time) and JST (Japan Standard Time) are distinct zones with different UTC offsets. Right now EDT is UTC-05:00 and JST is UTC+09:00.

How many hours apart are EDT and JST?

Right now EDT is 14 hours behind JST. The gap can shift by an hour when either zone enters or leaves daylight saving, which is why the 24-hour table above is computed against today's date.

Does EDT observe daylight saving time?

Yes. Eastern Daylight Time shifts forward an hour in spring and back in autumn, so the wall clock in New York, New York City and Washington DC moves with the seasons. The IANA tzdata handles the exact dates for you.

How do I schedule a call between EDT and JST?

Pick a slot where both ends are inside their working day. The best-meeting-times strip above shows the windows where both EDT and JST sit in 9-to-5 business hours today. If you need to commit to a specific minute, open the converter. It handles daylight saving transitions automatically. Note that EDT observes DST while JST does not, so the gap shifts by an hour twice a year.

What time is it in EDT when it is noon in JST?

When it is 12:00 noon in Japan Standard Time (JST), it is 22:00 (Mon) in Eastern Daylight Time (EDT) right now. The exact value can change by an hour at daylight saving transitions, so always compute against today's date.

Are EDT and JST the same time zone?

No. EDT (Eastern Daylight Time) and JST (Japan Standard Time) are distinct zones with different UTC offsets. Right now EDT is UTC-05:00 and JST is UTC+09:00.

How many hours apart are EDT and JST?

Right now EDT is 14 hours behind JST. The gap can shift by an hour when either zone enters or leaves daylight saving, which is why the 24-hour table above is computed against today's date.

Does EDT observe daylight saving time?

Yes. Eastern Daylight Time shifts forward an hour in spring and back in autumn, so the wall clock in New York, New York City and Washington DC moves with the seasons. The IANA tzdata handles the exact dates for you.

How do I schedule a call between EDT and JST?

Pick a slot where both ends are inside their working day. The best-meeting-times strip above shows the windows where both EDT and JST sit in 9-to-5 business hours today. If you need to commit to a specific minute, open the converter. It handles daylight saving transitions automatically. Note that EDT observes DST while JST does not, so the gap shifts by an hour twice a year.

Time zone comparison

EDT vs JST time zone comparison

Eastern Daylight Time (EDT, UTC-05:00) vs Japan Standard Time (JST, UTC+09:00). Right now EDT is 14h behind JST. EDT is used in New York, New York City and Washington DC while JST covers Tokyo, Osaka and Yokohama. Use the 24-hour grid below to find a meeting slot both sides will tolerate.

Right now in EDT

--:--:--

UTC

Right now in JST

--:--:--

UTC

Heads up: these zones diverge on daylight saving.

EDT observes DST while JST does not, so the gap shifts by an hour twice a year. In January the difference is 14h, in July it is 13h. If you are scheduling across the spring or autumn transitions, double-check the date.

Heads up: EDT is only observed in summer.

EDT is only observed second Sunday of March to first Sunday of November. Right now the actual zone in US East Coast in summer is EST, so the offsets and wall-clocks shown above reflect EST for this region rather than EDT.

No standard 9-to-5 overlap today between EDT and JST. Either side will need to take the call outside core hours. See the table below for the closest workable slots.

24-hour comparison

Each row is one hour. Green rows are when both sides are inside 9 AM to 5 PM.

Convert exact time →

24-hour wall-clock comparison between Eastern Daylight Time and Japan Standard Time, with business-hour overlap highlighted.
Hour	EDT (Eastern Daylight Time)	JST (Japan Standard Time)	Overlap
12 AM	00:00Mon	14:00Mon	JST only
1 AM	01:00Mon	15:00Mon	JST only
2 AM	02:00Mon	16:00Mon	JST only
3 AM	03:00Mon	17:00Mon	No overlap
4 AM	04:00Mon	18:00Mon	No overlap
5 AM	05:00Mon	19:00Mon	No overlap
6 AM	06:00Mon	20:00Mon	No overlap
7 AM	07:00Mon	21:00Mon	No overlap
8 AM	08:00Mon	22:00Mon	No overlap
9 AM	09:00Mon	23:00Mon	EDT only
10 AM	10:00Mon	00:00Tue	EDT only
11 AM	11:00Mon	01:00Tue	EDT only
12 PM	12:00Mon	02:00Tue	EDT only
1 PM	13:00Mon	03:00Tue	EDT only
2 PM	14:00Mon	04:00Tue	EDT only
3 PM	15:00Mon	05:00Tue	EDT only
4 PM	16:00Mon	06:00Tue	EDT only
5 PM	17:00Mon	07:00Tue	No overlap
6 PM	18:00Mon	08:00Tue	No overlap
7 PM	19:00Mon	09:00Tue	JST only
8 PM	20:00Mon	10:00Tue	JST only
9 PM	21:00Mon	11:00Tue	JST only
10 PM	22:00Mon	12:00Tue	JST only
11 PM	23:00Mon	13:00Tue	JST only

How EDT and JST compare

Eastern Daylight Time (EDT) sits at UTC-05:00 today, while Japan Standard Time (JST) is at UTC+09:00. The current gap is 14 hours, with EDT behind JST. In practical terms, if your morning starts at 9 AM in New York, your counterpart in Tokyo is seeing 23:00 on their own watch at that exact moment.

EDT is the working clock for New York, New York City and Washington DC. EDT is the summer version of EST. Same IANA zone, automatic switch on the second Sunday of March and first Sunday of November. JST covers Tokyo, Osaka and Yokohama. If your team is split between these two regions, the table above is the quickest way to spot the daily overlap window without doing the offset arithmetic in your head.

Daylight saving matters here. Eastern Daylight Time shifts forward an hour on the second Sunday of March (US) or the last Sunday of March (Europe) and back on the first Sunday of November or last Sunday of October. Japan Standard Time stays on a fixed offset year-round. The IANA tzdata baked into this page handles every transition automatically, so the table reflects the correct wall-clock times for today's date. For dates further out, use the converter linked above and pick the target date explicitly.

Common scheduling traps are easy to avoid here. Pick a wall-clock time on one side, read the matching wall-clock on the other from the table, and write both into the calendar invite, never just the difference. If the meeting falls in the week of a DST changeover and one of these zones shifts, the absolute clock will drift by an hour from what the recipient expects. The table is computed for today's date, so for a future meeting open the converter linked above and pick the exact date.

One last note for asynchronous teams: business-hour overlap is the wrong metric for handoff workflows. If you operate on a follow-the-sun model, you actually want zero overlap, with one team logging off as the other starts. EDT and JST differ by 14 hours, which gives you partial coverage. Add a zone in between if you want full 24-hour rotation.