JST to Chicago Time 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 Chicago Time, subtract 15 hours from the JST time: 9:00 AM JST = 6:00 PM CST (previous day).
JST (Japan Time) is used in Japan. Chicago Time (Chicago time) is used in Chicago, USA.
JST to Chicago Time time conversion table
JST to Chicago Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| JST | Chicago Time | 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 Chicago Time
Subtract 15 hours from the JST time to get Chicago Time.
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 Chicago Time
The time difference between JST and Chicago Time 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: Chicago Time is 15 hours behind of JST.
- 8 Mar 2026 – 31 Oct 2026: Chicago Time is 14 hours behind of JST.
- 1 Nov 2026 – 31 Dec 2026: Chicago Time is 15 hours behind of JST.
JST and Chicago Time during daylight saving time
- JST does not observe daylight saving time; it stays on UTC+9 all year.
- Chicago Time 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 Chicago Time
JST and Chicago Time 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 Chicago Time FAQ
What is the time difference between JST and Chicago Time?
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 Chicago Time?
9:00 AM JST is 6:00 PM CST (previous day).
What is 12 PM (noon) JST in Chicago Time?
12:00 PM JST is 9:00 PM CST (previous day).
Is Chicago Time ahead of or behind JST?
CST is 15 hours behind JST, so it is earlier in Chicago Time 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 Chicago Time change for daylight saving time?
Yes. Chicago Time 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 Chicago Time?
JST and Chicago Time 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.
Related conversions
Convert Chicago Time to JST
Convert JST to other time zones
Convert other time zones to Chicago Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.