10:15 AM
Thursday, August 13, 2026
UTC+09:00Fixed offset
Time Zone Converter
JST to KSTTime Converter
Convert Japan Standard Time to Korea Standard Time, compare their live UTC offsets and explore a complete 24-hour conversion table.
Live clocksDST aware24-hour table
Live comparison
Current local times
From
JST
Japan Standard Time
To
KST
Korea Standard Time
Enter a local date and time using JST.
KST
10:15 AM
Thursday, August 13, 2026
UTC+09:00Fixed offset
Time difference
JST and KST have the same UTC offset
Hourly comparison
24 hours24-hour conversion table
Compare each hour in JST with KST.
| Hour | JST | KST | Difference |
|---|---|---|---|
| 0 | 10:15 AM Thursday, August 13, 2026 | 10:15 AM Thursday, August 13, 2026 | Same offset |
| 1 | 11:15 AM Thursday, August 13, 2026 | 11:15 AM Thursday, August 13, 2026 | Same offset |
| 2 | 12:15 PM Thursday, August 13, 2026 | 12:15 PM Thursday, August 13, 2026 | Same offset |
| 3 | 1:15 PM Thursday, August 13, 2026 | 1:15 PM Thursday, August 13, 2026 | Same offset |
| 4 | 2:15 PM Thursday, August 13, 2026 | 2:15 PM Thursday, August 13, 2026 | Same offset |
| 5 | 3:15 PM Thursday, August 13, 2026 | 3:15 PM Thursday, August 13, 2026 | Same offset |
| 6 | 4:15 PM Thursday, August 13, 2026 | 4:15 PM Thursday, August 13, 2026 | Same offset |
| 7 | 5:15 PM Thursday, August 13, 2026 | 5:15 PM Thursday, August 13, 2026 | Same offset |
| 8 | 6:15 PM Thursday, August 13, 2026 | 6:15 PM Thursday, August 13, 2026 | Same offset |
| 9 | 7:15 PM Thursday, August 13, 2026 | 7:15 PM Thursday, August 13, 2026 | Same offset |
| 10 | 8:15 PM Thursday, August 13, 2026 | 8:15 PM Thursday, August 13, 2026 | Same offset |
| 11 | 9:15 PM Thursday, August 13, 2026 | 9:15 PM Thursday, August 13, 2026 | Same offset |
| 12 | 10:15 PM Thursday, August 13, 2026 | 10:15 PM Thursday, August 13, 2026 | Same offset |
| 13 | 11:15 PM Thursday, August 13, 2026 | 11:15 PM Thursday, August 13, 2026 | Same offset |
| 14 | 12:15 AM Friday, August 14, 2026 | 12:15 AM Friday, August 14, 2026 | Same offset |
| 15 | 1:15 AM Friday, August 14, 2026 | 1:15 AM Friday, August 14, 2026 | Same offset |
| 16 | 2:15 AM Friday, August 14, 2026 | 2:15 AM Friday, August 14, 2026 | Same offset |
| 17 | 3:15 AM Friday, August 14, 2026 | 3:15 AM Friday, August 14, 2026 | Same offset |
| 18 | 4:15 AM Friday, August 14, 2026 | 4:15 AM Friday, August 14, 2026 | Same offset |
| 19 | 5:15 AM Friday, August 14, 2026 | 5:15 AM Friday, August 14, 2026 | Same offset |
| 20 | 6:15 AM Friday, August 14, 2026 | 6:15 AM Friday, August 14, 2026 | Same offset |
| 21 | 7:15 AM Friday, August 14, 2026 | 7:15 AM Friday, August 14, 2026 | Same offset |
| 22 | 8:15 AM Friday, August 14, 2026 | 8:15 AM Friday, August 14, 2026 | Same offset |
| 23 | 9:15 AM Friday, August 14, 2026 | 9:15 AM Friday, August 14, 2026 | Same offset |
About JST
The standard time used throughout Japan.
- Full name
- Japan Standard Time
- Type
- Fixed UTC offset
- Regions
- Japan
Target time zone
About KST
The standard time used in South Korea.
- Full name
- Korea Standard Time
- Type
- Fixed UTC offset
- Regions
- South Korea
Reverse this conversion
Convert KST back to JST.
FAQ
JST to KST time FAQ
Common questions about converting Japan Standard Time to Korea Standard Time, their UTC offsets and daylight-saving behavior.
What is the time difference between JST and KST?
JST and KST currently have the same UTC offset. A seasonal time zone may use a different offset on another date.
What time is 9:00 AM JST in KST?
When it is 9:00 AM in JST, it is 9:00 AM in KST on Thursday, August 13, 2026.
Is KST ahead of JST?
Neither zone is ahead on this date because both use the same UTC offset.
Do JST and KST use daylight saving time?
JST is defined as a fixed UTC offset. Its offset does not change automatically according to the selected date. KST is defined as a fixed UTC offset. Its offset does not change automatically according to the selected date.
Where are JST and KST used?
JST is associated with Japan. KST is associated with South Korea. Time-zone abbreviations can be ambiguous, so TimeInOne uses the specific definitions shown on this page.