What time is it in Paris when it is noon in London?
The converter above answers that for whichever date you pick — and the date matters, because the gap is not constant through the year.
London to Paris
Convert a time from London to Paris on any date. Both cities change their clocks, but not on the same dates — so there are a few weeks each year when the usual difference shifts by an hour.
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Difference—
London and Paris
London runs on Europe/London and Paris on Europe/Paris. Both cities change their clocks, but not on the same dates — so there are a few weeks each year when the usual difference shifts by an hour.
This is why the converter above asks for a date. A meeting arranged in October for a date in November can land an hour off if you assume today's difference still holds — the clocks move between the two moments, and only one side may move.
The safest habit for scheduling across zones is to agree on the local time in one place and let each side convert, rather than agreeing on "the difference". The difference is a property of a date, not of a pair of cities.
Frequently asked questions
Is the difference between London and Paris always the same?
Both cities change their clocks, but not on the same dates — so there are a few weeks each year when the usual difference shifts by an hour.
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