JST to CST Converter
CST is 15 hours behind JST
JST to CST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in CST
| JST | CST |
|---|---|
| 12:00 AM | 9:00 AM -1d |
| 1:00 AM | 10:00 AM -1d |
| 2:00 AM | 11:00 AM -1d |
| 3:00 AM | 12:00 PM -1d |
| 4:00 AM | 1:00 PM -1d |
| 5:00 AM | 2:00 PM -1d |
| 6:00 AM | 3:00 PM -1d |
| 7:00 AM | 4:00 PM -1d |
| 8:00 AM | 5:00 PM -1d |
| 9:00 AM | 6:00 PM -1d |
| 10:00 AM | 7:00 PM -1d |
| 11:00 AM | 8:00 PM -1d |
| 12:00 PM | 9:00 PM -1d |
| 1:00 PM | 10:00 PM -1d |
| 2:00 PM | 11:00 PM -1d |
| 3:00 PM | 12:00 AM |
| 4:00 PM | 1:00 AM |
| 5:00 PM | 2:00 AM |
| 6:00 PM | 3:00 AM |
| 7:00 PM | 4:00 AM |
| 8:00 PM | 5:00 AM |
| 9:00 PM | 6:00 AM |
| 10:00 PM | 7:00 AM |
| 11:00 PM | 8:00 AM |
Converting Japan Standard Time to Central Standard Time
Japan Standard Time (JST) and Central Standard Time (CST) are separated by a 15 hours time difference. CST is 15 hours behind JST. JST is UTC+9, used in Japan, while CST is UTC-6, used in United States, Canada, Mexico.
When converting from JST to CST, the key reference points to remember are: 9:00 AM JST equals 6:00 PM CST, 12:00 PM noon JST equals 9:00 PM CST, and 5:00 PM JST equals 2:00 AM CST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across JST and CST
For professionals scheduling meetings between JST and CST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 15 hours difference, the window of overlap may be limited, making early morning or late evening calls necessary for one party. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
JST does not observe Daylight Saving Time, maintaining UTC+9 year-round. CST observes DST, switching to CDT (UTC-5). During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.