Set it up in Slack or give it a try below:
- 10:00 am CEST in Stockholm is 4:00 am EDT for you
- Stockholm is 6 hours ahead of you
- 10:00 am KST in Seoul is 9:00 pm EDT the previous day for you
- Seoul is 13 hours ahead of you
- 10:00 am CEST in Stockholm is 5:00 pm KST for Seoul
- Stockholm is 7 hours behind Seoul
Examples: