KST to HST Converter
HST is 19 hours behind KST
KST to HST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in HST
| KST | HST |
|---|---|
| 12:00 AM | 5:00 AM -1d |
| 1:00 AM | 6:00 AM -1d |
| 2:00 AM | 7:00 AM -1d |
| 3:00 AM | 8:00 AM -1d |
| 4:00 AM | 9:00 AM -1d |
| 5:00 AM | 10:00 AM -1d |
| 6:00 AM | 11:00 AM -1d |
| 7:00 AM | 12:00 PM -1d |
| 8:00 AM | 1:00 PM -1d |
| 9:00 AM | 2:00 PM -1d |
| 10:00 AM | 3:00 PM -1d |
| 11:00 AM | 4:00 PM -1d |
| 12:00 PM | 5:00 PM -1d |
| 1:00 PM | 6:00 PM -1d |
| 2:00 PM | 7:00 PM -1d |
| 3:00 PM | 8:00 PM -1d |
| 4:00 PM | 9:00 PM -1d |
| 5:00 PM | 10:00 PM -1d |
| 6:00 PM | 11:00 PM -1d |
| 7:00 PM | 12:00 AM |
| 8:00 PM | 1:00 AM |
| 9:00 PM | 2:00 AM |
| 10:00 PM | 3:00 AM |
| 11:00 PM | 4:00 AM |
Converting Korea Standard Time to Hawaii Standard Time
Korea Standard Time (KST) and Hawaii Standard Time (HST) are separated by a 19 hours time difference. HST is 19 hours behind KST. KST is UTC+9, used in South Korea, while HST is UTC-10, used in United States.
When converting from KST to HST, the key reference points to remember are: 9:00 AM KST equals 2:00 PM HST, 12:00 PM noon KST equals 5:00 PM HST, and 5:00 PM KST equals 10:00 PM HST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across KST and HST
For professionals scheduling meetings between KST and HST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 19 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
KST does not observe Daylight Saving Time, maintaining UTC+9 year-round. HST does not observe DST, staying at UTC-10 year-round.