Time Difference
Hour-by-hour time differences between major world cities, with the best hours to call.
Popular comparisons
All hub cities
Pick a starting city, then choose any destination on its page.
About these pages
Each comparison page shows both cities' live clocks, the current difference (including daylight saving time), an hour-by-hour conversion table for today, the flight-path distance, and the window when both cities are inside typical business hours. For an arbitrary date or a city not listed here, use the Time Zone Converter.