timedatelive

Best meeting times across time zones

Published 2026-08-04 · last checked 2026-08-04 · written and calculated in-house by timedatelive

Of the 330 city pairings we publish, 258 share at least one working hour and 72 share none. Here is which is which, and what the overlap actually is.

The short answer

Taking a working day as 09:00–17:00 local time in both cities on the same calendar day, 258 of our 330 city pairings share at least one hour and 72 share none at all. Only 24 pairings overlap for the full eight hours.

The 72 with no overlap are not a scheduling problem you can solve by picking a better hour — there is no hour to pick. Somebody has to move outside their working day. Auckland against any European city is the clearest case: at 09:00 in Auckland it is the previous evening in London, and by the time London opens Auckland has gone home.

Shared working hoursPairingsShare of 330
Full working day247%
7 hours4413%
6.5 hours72%
6 hours258%
5.5 hours103%
5 hours124%
4.5 hours124%
4 hours124%
3.5 hours62%
3 hours3210%
2 hours4313%
1.5 hours10%
1 hours309%
No shared hours7222%

Overlap of 09:00–17:00 local time in both cities, computed for 4 August 2026.

How this page was built. Offsets come from the IANA time zone database, read through Python's zoneinfo, for two reference instants: midday on 14 January 2026 and midday on 4 August 2026. Two instants are needed because 15 of the 34 cities move their clocks and 19 do not, so a single figure would be wrong for half the year. Gaps are the difference between the two cities' UTC offsets at the same instant. Shared working hours are the overlap of 09:00–17:00 local time in both cities on the same calendar day. Nothing here is estimated or rounded: every figure is recomputed from the tz database each time this page is rebuilt, and the date it was last checked is printed at the top. Full methodology. Overlap is measured on a single calendar day; a pairing with no same-day overlap may still have one if one side works the previous or following evening.

For a specific date and a specific set of cities, the meeting planner does this live, and the working hours calculator handles non-standard shifts.

Pairings that share a whole working day 24 pairings
Pairings with no shared working hours 72 pairings
Pairings that share 7 hours 44 pairings
Pairings that share 6.5 hours 7 pairings
Pairings that share 6 hours 25 pairings
Pairings that share 5.5 hours 10 pairings
Pairings that share 5 hours 12 pairings
Pairings that share 4.5 hours 12 pairings
Pairings that share 4 hours 12 pairings
Pairings that share 3.5 hours 6 pairings
Pairings that share 3 hours 32 pairings
Pairings that share 2 hours 43 pairings
Pairings that share 1.5 hours 1 pairings
Pairings that share 1 hours 30 pairings

Common follow-up questions

What counts as a shared working hour here?

An hour that falls inside 09:00-17:00 local time in both cities on the same calendar day. It is a deliberately strict definition. Teams that start at 08:00 or stay to 18:00 will find overlap where this page shows little, and the working hours calculator will handle those cases.

Which pairs are hardest to schedule?

Anything joining New Zealand or eastern Australia to Europe or the east coast of North America. Auckland to Toronto and Auckland to New York are 16 hours apart in August, which puts one side's working day entirely inside the other's night.

Does this change with daylight saving?

Yes, and it gets worse in winter. The figures on this page are computed for 4 August 2026. Recomputing them for 14 January 2026, the number of pairings with no shared working hours rises from 72 to 92, because Europe falls back an hour while Asia stays put. Asia-Europe pairings alone go from 3 with no overlap to 17.