London vs Paris Time Difference

London to Paris time chart, hour by hour

London	Paris
00:00	01:00
01:00	02:00
02:00	03:00
03:00	04:00
04:00	05:00
05:00	06:00
06:00	07:00
07:00	08:00
08:00	09:00
09:00	10:00
10:00	11:00
11:00	12:00
12:00	13:00
13:00	14:00
14:00	15:00
15:00	16:00
16:00	17:00
17:00	18:00
18:00	19:00
19:00	20:00
20:00	21:00
21:00	22:00
22:00	23:00
23:00	00:00 +1 day

Highlighted rows fall within 09:00–18:00 in both places: 8 shared working hours.

Clock changes in London and Paris

London

British Summer Time (BST)

Next clock change Sun 25 Oct 2026 (UTC+1 → UTC+0)

Paris

Central European Summer Time (CEST)

Next clock change Sun 25 Oct 2026 (UTC+2 → UTC+1)

Time difference between London and Paris today

At this moment Paris is 1 hour ahead of London. When it is 09:00 in London, it is 10:00 in Paris. London is on British Summer Time (BST); Paris is on Central European Summer Time (CEST).

Does the London to Paris time difference change?

No. Paris is 1 hour ahead of london all year, because both places change their clocks on the same dates.

Calling hours for London and Paris

When Paris is 1 hour ahead of London: 7 shared office hours, 09:00 to 16:00 in London (10:00 to 17:00 in Paris).

London vs Paris: The Current Gap

A London clock showing 10:00 means every Paris clock reads 11:00. This holds in January and July, on Christmas Day and Bastille Day, during the morning rush hour and the late-night metro. The gap is constant because both cities change their clocks on the same dates.

In winter: Paris is on Central European Time (CET, UTC+1) while London is on Greenwich Mean Time (GMT, UTC+0).

In summer: Paris is on Central European Summer Time (CEST, UTC+2) while London is on British Summer Time (BST, UTC+1).

The offset shifts together. On 29 March 2026, London clocks go forward at 01:00 GMT to 02:00 BST. Paris clocks go forward the same morning. On 25 October 2026, both cities fall back. The one-hour gap is locked.

London summer sunsets are later than Paris because of latitude, not time zone. On the June solstice (21 June 2026), London sunset is 21:21. Paris, one hour ahead on the clock but further south, sees its sun set around 21:50 local time. The extra daylight is real, but the clock gap stays the same.

Why Paris Is Always One Hour Ahead: CET/CEST vs GMT/BST

Add one hour to London time to get Paris time. That is the rule.

The reason is geography versus politics. The Prime Meridian runs through Greenwich in London at 0° longitude. Paris lies at about 2°20’ east, which is only about nine minutes of solar time ahead of London. If time zones followed strict longitude, Paris and London would share the same zone.

They do not. France uses Central European Time, the zone that covers most of continental Europe from Spain to Poland. This puts Paris one full hour east of its natural solar time.

The effect is visible in winter. In London, sunrise on the December solstice (21 December 2026) is 08:03, sunset 15:53. Parisians get a later sunrise and a later sunset than the clock suggests, because their clocks are set to a zone that belongs further east.

The Historical Reason: German Occupation and Post-War Alignment

France originally used Paris Mean Time, about nine minutes ahead of GMT. During the Second World War, Nazi Germany occupied northern France and imposed Central European Time (UTC+1) to align with Berlin. The Vichy government in the south followed suit.

After the war, France kept CET. The reasons were practical: a unified time zone for the country, alignment with neighbouring European economies, and the simple inertia of not changing back. The UK, by contrast, returned to GMT after the war and has remained on it, with summer time, ever since.

The result: a 55-minute Eurostar journey crosses a one-hour time zone boundary. Leave London St Pancras at 10:00 GMT. Arrive at Paris Gare du Nord at 13:00 local time (12:00 London time). The journey takes two hours and twenty minutes. The clock jumps forward by one hour.

How the 1-Hour Gap Affects Eurostar, Business, and Broadcasting

The constant offset simplifies scheduling. Set a video call for 14:00 London time and it is 15:00 Paris time, every month of the year. Skip the DST check. The overlap of the London and Paris working day is almost complete: 09:00 to 17:00 in London corresponds to 10:00 to 18:00 in Paris.

Eurostar schedules account for the gap. Book the 06:01 from London and you arrive in Paris at 09:47 local time (effectively 08:47 London time). The published timetable always uses local time at each end. A return ticket lists Paris departure and London arrival in their respective local times.

Broadcasters and financial markets treat the one hour as a fixed offset. The London Stock Exchange opens at 08:00 London time (London Stock Exchange opening times). Paris markets open at 09:00 local time, which is 08:00 London time. Live television broadcasts from Paris air in London one hour later.

The trap for travellers is forgetting the shift on the day of travel. Board the 08:13 Eurostar from London, arriving Paris at 11:20 local. You lose one hour in transit. You gain it back on the return. A 14:07 departure from Paris arrives in London at 14:30 local. The journey takes two hours and twenty-three minutes, but your watch shows only one hour and twenty-three minutes of elapsed time.

Using the London vs Paris Time Converter

The live clocks show the current time in both cities. The one-hour gap is visible at a glance.

For planning, the rule is: London time plus one hour equals Paris time. Scheduling a meeting from Paris to London? Subtract one hour. Booking a train? Check the local time at the departure and arrival stations separately. Railway apps and websites handle the conversion automatically.

Change your watch to local time as soon as you board the Eurostar. Travelling London to Paris: move the hands forward one hour during the journey. Returning: move them back. Do not wait until you arrive. The mental switch is easier to make in transit than at the Gare du Nord ticket counter.

For deeper context on why London uses GMT and BST, see the London time zone history page. For the exact dates of the 2026 clock changes in London, see London Daylight Saving Time 2026.

Frequently asked questions about London and Paris time

Do London and Paris change their clocks on the same day?

Yes. Both cities observe daylight saving time on the same schedule: clocks go forward on the last Sunday of March and back on the last Sunday of October. In 2026, the spring change is 29 March, the autumn change is 25 October.

Is the one-hour gap ever two hours?

No. The gap is always one hour. During the brief period in March and October when one city has changed and the other has not, the offset could theoretically shift, but both the UK and France follow the same EU-aligned change dates, so the offset stays constant.

Why is Paris not on the same time as London if they are so close geographically?

France chose to remain on Central European Time after the Second World War. The decision was political and economic, not geographic. Paris is only about nine minutes of solar time east of London, but the clock shows a full hour ahead.

Does the Eurostar timetable account for the time gap?

Yes. All departure and arrival times are shown in local time. A train from London to Paris lists the London departure in GMT or BST and the Paris arrival in CET or CEST. The journey time printed on the ticket is the real elapsed time, not the clock offset.

What is the best way to avoid confusion when travelling?

Change your watch to local time as soon as you board the train. London to Paris: add one hour. Paris to London: subtract one hour. Do not rely on your phone, which may switch time zones automatically only after you arrive.

How does the time gap affect business calls between London and Paris?

The one-hour offset is constant. A regular weekly call at 15:00 London time is always 16:00 Paris time. No seasonal adjustment is needed. The full working day overlaps, making London and Paris one of the easiest cross-border time zone pairs in the world.

What time is it in Paris when it is 9:00 AM in London?

10:00 today; Paris is 1 hour ahead of London.

Does the time difference between London and Paris change during the year?

No, it stays 1 hour ahead all year because both places change their clocks on the same dates.