Best overlap: 8:00 AM to 5:00 PM in London is 9:00 AM to 6:00 PM in Copenhagen.
The hours that work for both London and Copenhagen are 8:00 AM to 5:00 PM (London) and 9:00 AM to 6:00 PM (Copenhagen). You won't be short on options — 9 hours of overlap leaves space for recurring syncs and ad-hoc calls alike.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
London Europe/London | ||||||||||||||||||||||||
Copenhagen Europe/Copenhagen |
Long-distance relationships, parents working overseas, grandkids in Auckland and grandparents in London. The work guides do not really apply. Here is a practical playbook for keeping family relationships strong across time zones. -
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -
Slack converts timestamps automatically and shows everyone's local time, but it can't fix a bare '3 PM' typed into a channel. The settings worth changing and the habits that do the rest. -