TimezoneToolbox

CST to JST converter

JST is usually 14 h ahead of CST. It is 15 h ahead of CST 1 Jan–8 Mar and 1 Nov–31 Dec 2026, because of daylight saving time.

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CST to JST table

For 5 July 2026, when JST is 14 h ahead of CST. Other dates: see the table on the right.

CSTJST24-hour
12:00 AM2:00 PM 0:00 → 14:00
1:00 AM3:00 PM 1:00 → 15:00
2:00 AM4:00 PM 2:00 → 16:00
3:00 AM5:00 PM 3:00 → 17:00
4:00 AM6:00 PM 4:00 → 18:00
5:00 AM7:00 PM 5:00 → 19:00
6:00 AM8:00 PM 6:00 → 20:00
7:00 AM9:00 PM 7:00 → 21:00
8:00 AM10:00 PM 8:00 → 22:00
9:00 AM11:00 PM 9:00 → 23:00
10:00 AM12:00 AM next day10:00 → 0:00
11:00 AM1:00 AM next day11:00 → 1:00
12:00 PM2:00 AM next day12:00 → 2:00
1:00 PM3:00 AM next day13:00 → 3:00
2:00 PM4:00 AM next day14:00 → 4:00
3:00 PM5:00 AM next day15:00 → 5:00
4:00 PM6:00 AM next day16:00 → 6:00
5:00 PM7:00 AM next day17:00 → 7:00
6:00 PM8:00 AM next day18:00 → 8:00
7:00 PM9:00 AM next day19:00 → 9:00
8:00 PM10:00 AM next day20:00 → 10:00
9:00 PM11:00 AM next day21:00 → 11:00
10:00 PM12:00 PM next day22:00 → 12:00
11:00 PM1:00 PM next day23:00 → 13:00

When the difference changes

Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.

2026: from (UTC)until (UTC)JST vs CST
1 January 20268 March 202615 h ahead of
8 March 20261 November 202614 h ahead of
1 November 202631 December 202615 h ahead of
2027: from (UTC)until (UTC)JST vs CST
1 January 202714 March 202715 h ahead of
14 March 20277 November 202714 h ahead of
7 November 202731 December 202715 h ahead of

CST: Central Time · CST time now
CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

JST: Japan Standard Time · JST time now
Japan

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Questions

What is the time difference between CST and JST?

JST is usually 14 h ahead of CST. It is 15 h ahead of CST 1 Jan–8 Mar and 1 Nov–31 Dec 2026, because of daylight saving time.

What is 9 am CST in JST?

9:00 am CST is 11:00 PM JST, on dates when the usual difference applies. Use the converter above for any specific date.

Which CST does this page use?

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

Which JST does this page use?

Japan Standard Time, the clock time in Japan (IANA zone Asia/Tokyo).