Seoul ↔ Colombo Time Zone Comparison
Day starts 3 hours 30 minutes earlier in Seoul
Quick time conversions: Seoul → Colombo
Common reference points to help you plan across the time difference.
A 9:00 AM start in Seoul means 5:30 AM for your contact in Colombo.
If it's 1:00 PM where I am in Seoul, what does Colombo show?—9:30 AM
8:00 AMin Seoul→4:30 AMin Colombo
For every 7:00 PM in Seoul, it's simultaneously 3:30 PM in Colombo.
2:00 PMin Seoul→10:30 AMin Colombo
Frequently Asked Questions
What is the current offset between Seoul and Colombo?
Currently Seoul (Asia/Seoul) and Colombo (Asia/Colombo) differ by 3 hours 30 minutes.
When can I schedule a call that works in both Seoul and Colombo?
You have 4.5 hours of mutual business hours. 13:00 Seoul / 09:00 Colombo is typically the sweet spot.
Do I need to worry about DST when scheduling between Seoul and Colombo?
You can plan confidently — no DST shifts are due for either location this week, so the 3 hours 30 minutes gap won't change.
If it's noon in Seoul, what time is it in Colombo?
12:00 PM in Seoul is 8:30 AM in Colombo at the same moment.
How do I convert Seoul time to Colombo time?
Use the interactive slider above. Drag it to any Seoul hour and all locations update instantly. Or type "3pm" / "15:00" in the search bar.
What public holidays should I keep in mind when scheduling between Seoul and Colombo?
Seoul observes Liberation Day on August 15. Keep this in mind when coordinating between Seoul and Colombo.
What time zones do Seoul and Colombo use?
Seoul runs on Asia/Seoul (IANA) and Colombo on Asia/Colombo (IANA) — a 3 hours 30 minutes gap between them.
9 AM Seoul time converts to what in Colombo?
9 AM in Seoul → 5:30 AM in Colombo. That falls outside standard hours in Colombo — confirm with your contact.
What time does a 5 PM Seoul message arrive in Colombo?
When the workday ends at 5 PM in Seoul, Colombo reads 1:30 PM. Your Colombo contact should still be at their desk.
Seoul ↔ Colombo
4h of business hours overlap daily (09:00–17:00)· Showing core hours (08:00–18:00)
Seoul
Colombo
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.