Clockjumper

Timezone conversion

JST to EDT Time — Convert Japan Standard Time to Eastern Daylight Time (US)

EDT is currently 13 hours behind JST. The gap shifts across the year: around January it is 14 hours behind JST, and around July it is 13 hours behind JST, because one or both zones observe daylight saving.

EDT is currently 13 hours behind JST.

JST • GMT+9 (UTC+9)
2:16 AM
Thursday, Jul 9
EDT • EDT (UTC-4)
1:16 PM
Wednesday, Jul 8

Interactive converter

12:00PM

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Full JST to EDT conversion table

JSTEDT
12:00 AM11:00 AM(previous day)
1:00 AM12:00 PM(previous day)
2:00 AM1:00 PM(previous day)
3:00 AM2:00 PM(previous day)
4:00 AM3:00 PM(previous day)
5:00 AM4:00 PM(previous day)
6:00 AM5:00 PM(previous day)
7:00 AM6:00 PM(previous day)
8:00 AM7:00 PM(previous day)
9:00 AM8:00 PM(previous day)
10:00 AM9:00 PM(previous day)
11:00 AM10:00 PM(previous day)
12:00 PM11:00 PM(previous day)
1:00 PM12:00 AM
2:00 PM1:00 AM
3:00 PM2:00 AM
4:00 PM3:00 AM
5:00 PM4:00 AM
6:00 PM5:00 AM
7:00 PM6:00 AM
8:00 PM7:00 AM
9:00 PM8:00 AM
10:00 PM9:00 AM
11:00 PM10:00 AM

Daylight saving and how the gap changes

Around January the JST → EDT offset is 14 hours behind JST. Around July it is 13 hours behind JST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is EDT ahead of or behind JST right now?
EDT is currently 13 hours behind JST.
What is the current JST to EDT time difference?
Right now the gap is 13 hours behind — EDT is 13 hours behind JST.
Does the JST → EDT offset change during the year?
Yes. Around January the offset is 14 hours behind JST; around July it is 13 hours behind JST. The converter above always reflects the correct offset for the date you pick.
Does JST observe daylight saving time?
No — Japan Standard Time stays at a fixed UTC offset year-round.
Does EDT observe daylight saving time?
Yes — Eastern Daylight Time (US) observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
What time is 9 AM JST in EDT?
9:00 AM JST is 8:00 PM (previous day) EDT.
What time is 12 PM (noon) JST in EDT?
12:00 PM JST is 11:00 PM (previous day) EDT.
What time is 5 PM JST in EDT?
5:00 PM JST is 4:00 AM EDT.
When is the best time to schedule a call between JST and EDT?
JST and EDT have no direct 09:00–17:00 overlap on the same calendar day. Consider early-morning or late-evening slots on one side, or an asynchronous handoff.
What time zone does JST refer to?
JST refers to Japan Standard Time (IANA: Asia/Tokyo).
What time zone does EDT refer to?
EDT refers to Eastern Daylight Time (US) (IANA: America/New_York).

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