CST to JST Time Converter
Compare CST and JST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both Chicago and Tokyo.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| CST (Chicago) | JST (Tokyo) |
|---|---|
| 12:00 AM | 02:00 PM |
| 01:00 AM | 03:00 PM |
| 02:00 AM | 04:00 PM |
| 03:00 AM | 05:00 PM |
| 04:00 AM | 06:00 PM |
| 05:00 AM | 07:00 PM |
| 06:00 AM | 08:00 PM |
| 07:00 AM | 09:00 PM |
| 08:00 AM | 10:00 PM |
| 09:00 AM | 11:00 PM |
| 10:00 AM | 12:00 AM(Sun, Jul 26) |
| 11:00 AM | 01:00 AM(Sun, Jul 26) |
| 12:00 PM | 02:00 AM(Sun, Jul 26) |
| 01:00 PM | 03:00 AM(Sun, Jul 26) |
| 02:00 PM | 04:00 AM(Sun, Jul 26) |
| 03:00 PM | 05:00 AM(Sun, Jul 26) |
| 04:00 PM | 06:00 AM(Sun, Jul 26) |
| 05:00 PM | 07:00 AM(Sun, Jul 26) |
| 06:00 PM | 08:00 AM(Sun, Jul 26) |
| 07:00 PM | 09:00 AM(Sun, Jul 26) |
| 08:00 PM | 10:00 AM(Sun, Jul 26) |
| 09:00 PM | 11:00 AM(Sun, Jul 26) |
| 10:00 PM | 12:00 PM(Sun, Jul 26) |
| 11:00 PM | 01:00 PM(Sun, Jul 26) |
Daylight saving time
Chicago observes daylight saving time; Tokyo does not. Expect a one-hour swing when Chicago starts or ends DST.
Working-hours overlap
Standard 9-to-5 hours in Chicago and Tokyo do not overlap. Use an early or late slot on one side.
Frequently asked questions
What is the time difference between CST and JST?+
JST (UTC+09:00) is currently 14 hours ahead of CST (UTC-05:00). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does CST or JST observe daylight saving time?+
Chicago observes daylight saving time; Tokyo does not, so the gap changes when Chicago springs forward or falls back. Times on this page always reflect the current local rules.
What are the best meeting hours between Chicago and Tokyo?+
Standard 9–5 working hours in Chicago and Tokyo do not overlap. Pick an early or late slot for one side, or use the 24-hour table above to find a time that works.
How do I quickly convert CST to JST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the CST row to see the matching JST time. The Event Planner also lets you pick a specific date and share it with attendees.