City Comparison

Each guide in this section does the same job for a different pair of cities: what the difference between them is, when during the year it changes, and which hours of the working day the two places can realistically share.

The gap between two cities is not a fixed number. A pair that sits five hours apart for most of the year can spend three weeks four hours apart, because their daylight saving calendars begin and end on different dates, and a pairing that crosses the equator moves in both directions instead of one. Every guide gives the standard difference, the weeks when it shifts, and a suggested window for a call. For the difference at this exact moment rather than the seasonal picture, open the clock pages themselves, such as London or New York, and use the time difference tool that each of them carries.

Guides in this section (7)

London vs New York Time Difference The five-hour gap that briefly becomes four, the three weeks a year it moves, and the afternoon hours the two cities can realistically share.
London vs Tokyo Time Difference Nine hours in winter and eight in summer, with one narrow end-of-day window when both cities are still at their desks.
Paris vs Singapore Time Difference Six or seven hours apart depending on the season, with Singapore holding still and Paris doing all of the moving.
Berlin vs Dubai Time Difference Two or three hours apart, which makes this one of the easiest long-distance pairings for a genuinely shared working day.
New York vs Los Angeles Time Difference The three-hour domestic gap that shapes American business hours, market opens and broadcast schedules alike.
New York vs New Delhi Time Difference Nine and a half or ten and a half hours, and the early-morning and evening slots that keep the corridor workable.
London vs Sydney Time Difference Nine to eleven hours apart, changing four times a year as the two hemispheres shift their clocks in opposite directions.

Other guide sections

This is one of 8 sections in the library. The others cover Time Zones, Daylight Saving Time (DST), Business & Remote Work, Travel, Interesting Facts, Country Guides and Time & Astronomy. The guides index lists every article we have published in one place.