Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between sgt and kst?
Singapore Time (sgt) is UTC+8 and Korea Standard Time (kst) is UTC+9. The difference between them is 1 hours.
Where is sgt used?
Singapore Time (sgt) is used in Singapore and surrounding regions. The IANA timezone identifier is Asia/Singapore.
Where is kst used?
Korea Standard Time (kst) is used in South Korea and surrounding regions. The IANA timezone identifier is Asia/Seoul.
How do I convert sgt to kst?
Use the interactive converter above. Drag the time slider to any sgt time and the kst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
SGT (Singapore) is 1 hour behind KST (Seoul). Midday in SGT (Singapore) lines up with 13:00 in KST (Seoul).
SGT (Singapore) runs on Asia/Singapore; KST (Seoul) runs on Asia/Seoul. Together they are 1 hour apart.
Mutual working hours
There is a 7-hour window each day where both SGT (Singapore) and KST (Seoul) are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
SGT (Singapore)
KST (Seoul)
Overlap (7h)
Best times to schedule a meeting
There is a 7-hour daily window where both locations are in business hours. The 3 best slots are listed below.
09:00 Singapore / 10:00 Seoul✓ Both working
10:00 Singapore / 11:00 Seoul✓ Both working
11:00 Singapore / 12:00 Seoul✓ Both working
Working hours defined as 09:00–17:00 local time for each location.
Upcoming public holidays
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
SGT (Singapore)3 holidays
Aug 10National Day
Nov 9Deepavali
Dec 25Christmas Day
KST (Seoul)7 holidays
Aug 15Liberation Day
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
How to work with SGT (Singapore) and KST (Seoul) time zones
The 1-hour gap between SGT (Singapore) (Singapore) and KST (Seoul) (South Korea) requires some planning — but a 7-hour daily overlap means both teams can connect in real time without unusual scheduling.
💡 How to schedule across these time zones
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If you are in SGT (Singapore), aim for 09:00–10:00, which corresponds to 10:00–11:00 in KST (Seoul) — both teams are within working hours.
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If you are in SGT (Singapore), aim for 10:00–11:00, which corresponds to 11:00–12:00 in KST (Seoul) — both teams are within working hours.
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If you are in SGT (Singapore), aim for 11:00–12:00, which corresponds to 12:00–13:00 in KST (Seoul) — both teams are within working hours.
Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.
Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am SGT (Singapore)".
