Clockjumper

Timezone conversion

JST to ET Time — Convert Japan Standard Time to Eastern Time (US)

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

ET is currently 13 hours behind JST.

JST • JST (UTC+9)
11:46 PM
Thursday, Sep 10
ET • EDT (UTC-4)
10:46 AM
Thursday, Sep 10

Abbreviation disambiguation

On Clockjumper, ET refers to the Eastern Time zone of the United States and Canada. ET is an umbrella name rather than a fixed offset: it means EST (UTC−5) in winter and EDT (UTC−4) in summer, and these pages show whichever is currently in force.

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Full JST to ET conversion table

JSTET
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 ET 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 ET ahead of or behind JST right now?
ET is currently 13 hours behind JST.
What is the current JST to ET time difference?
Right now the gap is 13 hours — ET is 13 hours behind JST.
Does the JST → ET offset change during the year?
Yes. Around January ET 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 ET observe daylight saving time?
Yes — Eastern Time (US) observes DST, so its UTC offset shifts by 1 hour between winter and summer.
What time is 3 AM JST in ET?
3:00 AM JST is 2:00 PM (previous day) ET.
What time is 8 AM JST in ET?
8:00 AM JST is 7:00 PM (previous day) ET.
What time is 9 AM JST in ET?
9:00 AM JST is 8:00 PM (previous day) ET.
What time is 10 AM JST in ET?
10:00 AM JST is 9:00 PM (previous day) ET.
What time is 11 AM JST in ET?
11:00 AM JST is 10:00 PM (previous day) ET.
What time is 12 PM (noon) JST in ET?
12:00 PM JST is 11:00 PM (previous day) ET.
What time is 2 PM JST in ET?
2:00 PM JST is 1:00 AM ET.
What time is 3 PM JST in ET?
3:00 PM JST is 2:00 AM ET.
What time is 4 PM JST in ET?
4:00 PM JST is 3:00 AM ET.
What time is 5 PM JST in ET?
5:00 PM JST is 4:00 AM ET.
What time is 9 PM JST in ET?
9:00 PM JST is 8:00 AM ET.
What time is 10 PM JST in ET?
10:00 PM JST is 9:00 AM ET.
When is the best time to schedule a call between JST and ET?
JST and ET 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 ET refer to?
ET refers to Eastern Time (US) (IANA: America/New_York).
Is ET on this page the same as other zones that share the letters "ET"?
On Clockjumper, ET refers to the Eastern Time zone of the United States and Canada. ET is an umbrella name rather than a fixed offset: it means EST (UTC−5) in winter and EDT (UTC−4) in summer, and these pages show whichever is currently in force.

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