CST to JST Converter

Converting Central Standard Time to Japan Standard Time

Central Standard Time (CST) and Japan Standard Time (JST) are separated by a 15 hours time difference. JST is 15 hours ahead of CST. CST is UTC-6, used in United States, Canada, Mexico, while JST is UTC+9, used in Japan.

When converting from CST to JST, the key reference points to remember are: 9:00 AM CST equals 12:00 AM JST, 12:00 PM noon CST equals 3:00 AM JST, and 5:00 PM CST equals 8:00 AM JST. The conversion table above shows every hour of the day mapped between these two time zones.

Scheduling Across CST and JST

For professionals scheduling meetings between CST and JST, 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

CST observes Daylight Saving Time, switching to CDT (UTC-5) during summer months. JST does not observe DST, staying at UTC+9 year-round. 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.