Find the exact time difference between any two cities in the world. Live clocks, current times and the exact hour offset — updated every second.
Every city in the world operates on a time zone — an offset from UTC (Coordinated Universal Time). The time difference between two cities is simply the difference between their UTC offsets. New York is UTC-5 in winter and London is UTC+0, so the time difference is 5 hours — London is 5 hours ahead.
Daylight saving time complicates this. Many countries shift their clocks forward by 1 hour in spring and back in autumn — but not all on the same date. This means the time difference between New York and London actually changes 4 times per year.
The most commonly searched time differences are between major business and travel hubs: New York and London (5-6 hours), London and Dubai (3-4 hours), New York and Tokyo (13-14 hours), London and Sydney (9-11 hours), and Los Angeles and Tokyo (16-17 hours). These gaps shift seasonally with daylight saving time.
For remote teams, the time difference between cities determines your overlap window — the hours when everyone is simultaneously in their working day. A 5-hour difference (New York/London) gives about 4 hours of overlap. A 13-hour difference (New York/Tokyo) gives almost none. Use our Meeting Planner to find the best meeting time for your team.