The time difference between Kolkata and Seoul can be calculated by finding the difference in their longitudes and dividing by 15 (since 15 degrees of longitude correspond to 1 hour of time difference):
The time difference between Kolkata and Seoul
= (127°06’E – 88°30’E) × 4
= (126°66’E – 88°30’E) × 4
= 38°36’× 4
= 38° × 4 + 36’× 4
= 152 min + 144 sec
= 154 min 24 sec
= 2 hours 34 minutes 24 sec
Since Kolkata is ahead of Greenwich Mean Time (GMT) by 5 hours 30 minutes (IST), we need to add this time difference to find the local time in Seoul:
Local time in Seoul = Kolkata time + time difference
= 12:00 PM + 2 hours 34 minutes
= 2:34 PM
Therefore, when it is 12 noon at Kolkata, the local time in Seoul is 2:34 PM.
