Exact Time Difference: Seoul to Kolkata
Day starts 3 hours 30 minutes earlier in Seoul
Quick time conversions: Seoul → Kolkata
Common reference points to help you plan across the time difference.
At 8:00 AM Seoul time, you're looking at 4:30 AM in Kolkata.
I'm in Seoul at 5:00 PM — what time is my colleague in Kolkata seeing?—1:30 PM
6:00 PMin Seoul→2:30 PMin Kolkata
When it's 4:00 PM in Seoul, the time in Kolkata is 12:30 PM.
2:00 PMin Seoul→10:30 AMin Kolkata
Seoul 11:00 AM — what's that in Kolkata?—7:30 AM
Frequently Asked Questions
What is the Seoul to Kolkata time difference?
Seoul is 3 hours 30 minutes ahead of Kolkata. Seoul uses Asia/Seoul and Kolkata uses Asia/Kolkata.
When are both Seoul and Kolkata in working hours simultaneously?
Seoul and Kolkata share 4.5 hours of business hours overlap daily. Aim for 13:00 Seoul / 09:00 Kolkata for best availability.
Do I need to worry about DST when scheduling between Seoul and Kolkata?
No DST changes are expected in the next 7 days for either Seoul or Kolkata. The 3 hours 30 minutes difference is stable.
12:00 PM in Seoul is what time in Kolkata?
12:00 PM Seoul time = 8:30 AM in Kolkata.
What tools help schedule across Seoul and Kolkata?
The slider is the fastest method — move it to any Seoul hour and watch Kolkata update live. The text bar also accepts natural language input.
Are there public holidays that might interrupt meetings between Seoul and Kolkata?
Chuseok falls on September 24 in Seoul. If you have meetings around that date, confirm availability in advance.
What are the official time zones for Seoul and Kolkata?
Seoul runs on Asia/Seoul (IANA) and Kolkata on Asia/Kolkata (IANA) — a 3 hours 30 minutes gap between them.
9 AM Seoul time converts to what in Kolkata?
9:00 AM in Seoul = 5:30 AM in Kolkata. That falls outside standard hours in Kolkata — confirm with your contact.
Seoul ↔ Kolkata
4h of business hours overlap daily (09:00–17:00)· Showing core hours (08:00–18:00)
Seoul
Kolkata
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.