Best overlap: 8:00 AM to 4:00 PM in Edinburgh is 10:00 AM to 6:00 PM in Johannesburg.
The sweet spot is 8:00 AM to 4:00 PM Edinburgh time, matching 10:00 AM to 6:00 PM in Johannesburg. The 2-hour gap barely gets in the way — you've got 8 hours of overlap, so pick whatever time fits the agenda. Heads up: because Edinburgh changes its clocks and Johannesburg doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Edinburgh Europe/London | ||||||||||||||||||||||||
Johannesburg Africa/Johannesburg |
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. -