JST to CST Converter
CST is 15 hours behind JST. 9:00 AM JST = 6:00 PM CST (previous day).
CST is 15 hours behind JST at the moment. To convert JST to CST, subtract 15 hours from the JST time: 9:00 AM JST = 6:00 PM CST (previous day).
JST (Japan Time) is used in Japan. CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year.
CST here means North American Central Standard Time, not China Standard Time.
JST to CST time conversion table
JST to CST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| JST | CST | Day |
|---|---|---|
| 12:00 AM JST | 9:00 AM CST | previous day |
| 1:00 AM JST | 10:00 AM CST | previous day |
| 2:00 AM JST | 11:00 AM CST | previous day |
| 3:00 AM JST | 12:00 PM CST | previous day |
| 4:00 AM JST | 1:00 PM CST | previous day |
| 5:00 AM JST | 2:00 PM CST | previous day |
| 6:00 AM JST | 3:00 PM CST | previous day |
| 7:00 AM JST | 4:00 PM CST | previous day |
| 8:00 AM JST | 5:00 PM CST | previous day |
| 9:00 AM JST | 6:00 PM CST | previous day |
| 10:00 AM JST | 7:00 PM CST | previous day |
| 11:00 AM JST | 8:00 PM CST | previous day |
| 12:00 PM JST | 9:00 PM CST | previous day |
| 1:00 PM JST | 10:00 PM CST | previous day |
| 2:00 PM JST | 11:00 PM CST | previous day |
| 3:00 PM JST | 12:00 AM CST | night |
| 4:00 PM JST | 1:00 AM CST | night |
| 5:00 PM JST | 2:00 AM CST | night |
| 6:00 PM JST | 3:00 AM CST | night |
| 7:00 PM JST | 4:00 AM CST | night |
| 8:00 PM JST | 5:00 AM CST | night |
| 9:00 PM JST | 6:00 AM CST | — |
| 10:00 PM JST | 7:00 AM CST | — |
| 11:00 PM JST | 8:00 AM CST | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert JST to CST
Subtract 15 hours from the JST time to get CST.
Example: 9:00 AM JST = 6:00 PM CST (previous day).
Across midnight: 1:00 AM JST = 10:00 AM CST (previous day). The date changes, so always check the day as well as the hour.
Time difference between JST and CST
The time difference between JST and CST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: CST is 15 hours behind of JST.
- 8 Mar 2026 – 31 Oct 2026: CST is 14 hours behind of JST.
- 1 Nov 2026 – 31 Dec 2026: CST is 15 hours behind of JST.
JST and CST during daylight saving time
- JST does not observe daylight saving time; it stays on UTC+9 all year.
- CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
Best time for a meeting between JST and CST
JST and CST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM JST, which is 4:00 PM CST.
JST to CST FAQ
What is the time difference between JST and CST?
Right now CST is 15 hours behind JST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM JST in CST?
9:00 AM JST is 6:00 PM CST (previous day).
What is 12 PM (noon) JST in CST?
12:00 PM JST is 9:00 PM CST (previous day).
Is CST ahead of or behind JST?
CST is 15 hours behind JST, so it is earlier in CST than in JST.
Does JST change for daylight saving time?
No. JST stays on the same offset all year, so conversions never shift for daylight saving time.
Does CST change for daylight saving time?
Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
What is the best time for a meeting between JST and CST?
JST and CST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM JST, which is 4:00 PM CST.
Is CT the same as CST?
CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert CST to JST
Convert JST to other time zones
Convert other time zones to CST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.