GMT to KST Converter
KST is 9 hours ahead of GMT
GMT to KST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in KST
| GMT | KST |
|---|---|
| 12:00 AM | 9:00 AM |
| 1:00 AM | 10:00 AM |
| 2:00 AM | 11:00 AM |
| 3:00 AM | 12:00 PM |
| 4:00 AM | 1:00 PM |
| 5:00 AM | 2:00 PM |
| 6:00 AM | 3:00 PM |
| 7:00 AM | 4:00 PM |
| 8:00 AM | 5:00 PM |
| 9:00 AM | 6:00 PM |
| 10:00 AM | 7:00 PM |
| 11:00 AM | 8:00 PM |
| 12:00 PM | 9:00 PM |
| 1:00 PM | 10:00 PM |
| 2:00 PM | 11:00 PM |
| 3:00 PM | 12:00 AM +1d |
| 4:00 PM | 1:00 AM +1d |
| 5:00 PM | 2:00 AM +1d |
| 6:00 PM | 3:00 AM +1d |
| 7:00 PM | 4:00 AM +1d |
| 8:00 PM | 5:00 AM +1d |
| 9:00 PM | 6:00 AM +1d |
| 10:00 PM | 7:00 AM +1d |
| 11:00 PM | 8:00 AM +1d |
Converting Greenwich Mean Time to Korea Standard Time
Greenwich Mean Time (GMT) and Korea Standard Time (KST) are separated by a 9 hours time difference. KST is 9 hours ahead of GMT. GMT is UTC+0, used in United Kingdom, Ireland, Portugal, while KST is UTC+9, used in South Korea.
When converting from GMT to KST, the key reference points to remember are: 9:00 AM GMT equals 6:00 PM KST, 12:00 PM noon GMT equals 9:00 PM KST, and 5:00 PM GMT equals 2:00 AM KST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across GMT and KST
For professionals scheduling meetings between GMT 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 9 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
GMT observes Daylight Saving Time, switching to BST (UTC+1) during summer months. KST 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.