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