9am in Colombo is 12:30pm in Seoul
MEETING PLANNER
hover a column · click to lockSeoul is 3.5 hours ahead of Colombo. Colombo runs on Asia/Colombo (UTC+5:30); Seoul runs on Asia/Seoul (UTC+9). The difference is measured right now.
Standard 9-to-5 business hours in Colombo and Seoul overlap for roughly 4.5 hours a day. That window lands at 09:00–13:30 in Colombo and 12:30–17:00 in Seoul. Teams with real-time coordination needs anchor cross-city calls inside it: long enough to cover handovers, short enough that it forces crisp agendas. Outside that window, async is the default — shared docs, recorded updates, and scheduled follow-ups rather than live meetings.
- What is the time difference between Colombo and Seoul?
- Seoul is currently 3.5 hours ahead of Colombo. Colombo is on Asia/Colombo (UTC+5:30); Seoul is on Asia/Seoul (UTC+9).
- Do Colombo and Seoul observe daylight saving time?
- Neither Colombo nor Seoul observes daylight saving time. The offset between them is the same all year.
- When do business hours overlap between Colombo and Seoul?
- Standard 9-to-5 business hours overlap for about 4.5 hours per day — roughly 09:00–13:30 in Colombo and 12:30–17:00 in Seoul. Cross-city calls typically land inside that window.
Frequently Asked Questions
What is the time difference between Colombo and Seoul?
Seoul is currently 3.5 hours ahead of Colombo. Colombo is on Asia/Colombo (UTC+5:30); Seoul is on Asia/Seoul (UTC+9).
Do Colombo and Seoul observe daylight saving time?
Neither Colombo nor Seoul observes daylight saving time. The offset between them is the same all year.
When do business hours overlap between Colombo and Seoul?
Standard 9-to-5 business hours overlap for about 4.5 hours per day — roughly 09:00–13:30 in Colombo and 12:30–17:00 in Seoul. Cross-city calls typically land inside that window.