Clockjumper

Timezone conversion

CST to JST Time — Convert Central Standard Time (US) to Japan Standard Time

JST is currently 14 hours ahead of CST. The gap shifts across the year: around January JST is 15 hours ahead of CST, and around July it is 14 hours ahead of CST, because one or both zones observe daylight saving.

JST is currently 14 hours ahead of CST.

CST • CDT (UTC-5)
9:32 AM
Thursday, Sep 10
JST • JST (UTC+9)
11:32 PM
Thursday, Sep 10

Abbreviation disambiguation

On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.

Interactive converter

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Full CST to JST conversion table

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

Daylight saving and how the gap changes

Around January JST is 15 hours ahead of CST. Around July it is 14 hours ahead of CST. 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 JST ahead of or behind CST right now?
JST is currently 14 hours ahead of CST.
What is the current CST to JST time difference?
Right now the gap is 14 hours — JST is 14 hours ahead of CST.
Does the CST → JST offset change during the year?
Yes. Around January JST is 15 hours ahead of CST; around July it is 14 hours ahead of CST. The converter above always reflects the correct offset for the date you pick.
Does CST observe daylight saving time?
CST is itself the standard-time form. Central Standard Time (US) is in force at UTC-6 through the winter months; outside that window the same zone is on CDT (UTC-5).
Does JST observe daylight saving time?
No — Japan Standard Time stays at a fixed UTC offset year-round.
What time is 3 AM CST in JST?
3:00 AM CST is 5:00 PM JST.
What time is 8 AM CST in JST?
8:00 AM CST is 10:00 PM JST.
What time is 9 AM CST in JST?
9:00 AM CST is 11:00 PM JST.
What time is 10 AM CST in JST?
10:00 AM CST is 12:00 AM (next day) JST.
What time is 11 AM CST in JST?
11:00 AM CST is 1:00 AM (next day) JST.
What time is 12 PM (noon) CST in JST?
12:00 PM CST is 2:00 AM (next day) JST.
What time is 2 PM CST in JST?
2:00 PM CST is 4:00 AM (next day) JST.
What time is 3 PM CST in JST?
3:00 PM CST is 5:00 AM (next day) JST.
What time is 4 PM CST in JST?
4:00 PM CST is 6:00 AM (next day) JST.
What time is 5 PM CST in JST?
5:00 PM CST is 7:00 AM (next day) JST.
What time is 9 PM CST in JST?
9:00 PM CST is 11:00 AM (next day) JST.
What time is 10 PM CST in JST?
10:00 PM CST is 12:00 PM (next day) JST.
When is the best time to schedule a call between CST and JST?
CST and JST 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 CST refer to?
CST refers to Central Standard Time (US) (IANA: America/Chicago).
What time zone does JST refer to?
JST refers to Japan Standard Time (IANA: Asia/Tokyo).
Is CST on this page the same as other zones that share the letters "CST"?
On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.

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