JST to KST Converter
KST is in the same time zone as JST
JST to KST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in KST
| JST | KST |
|---|---|
| 12:00 AM | 12:00 AM |
| 1:00 AM | 1:00 AM |
| 2:00 AM | 2:00 AM |
| 3:00 AM | 3:00 AM |
| 4:00 AM | 4:00 AM |
| 5:00 AM | 5:00 AM |
| 6:00 AM | 6:00 AM |
| 7:00 AM | 7:00 AM |
| 8:00 AM | 8:00 AM |
| 9:00 AM | 9:00 AM |
| 10:00 AM | 10:00 AM |
| 11:00 AM | 11:00 AM |
| 12:00 PM | 12:00 PM |
| 1:00 PM | 1:00 PM |
| 2:00 PM | 2:00 PM |
| 3:00 PM | 3:00 PM |
| 4:00 PM | 4:00 PM |
| 5:00 PM | 5:00 PM |
| 6:00 PM | 6:00 PM |
| 7:00 PM | 7:00 PM |
| 8:00 PM | 8:00 PM |
| 9:00 PM | 9:00 PM |
| 10:00 PM | 10:00 PM |
| 11:00 PM | 11:00 PM |
Converting Japan Standard Time to Korea Standard Time
Japan Standard Time (JST) and Korea Standard Time (KST) are separated by a 0 hours time difference. KST is 0 hours the same as JST. JST is UTC+9, used in Japan, while KST is UTC+9, used in South Korea.
When converting from JST to KST, the key reference points to remember are: 9:00 AM JST equals 9:00 AM KST, 12:00 PM noon JST equals 12:00 PM KST, and 5:00 PM JST equals 5:00 PM KST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across JST and KST
For professionals scheduling meetings between JST and KST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 0 hours difference, the window of overlap may be limited. 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. KST does not observe DST, staying at UTC+9 year-round.