Europe's Time Zones Explained: CET, GMT, EET and More

Europe is a relatively compact continent, but it still spans enough longitude to require multiple time zones. From the western tip of Portugal to the eastern border of Finland, there is roughly a three-hour natural time difference. In practice, Europe uses three main time zones, with a handful of exceptions and outliers. If you are travelling across Europe, scheduling calls with European colleagues, or just trying to figure out what time it is in Paris when it is noon in London, this guide covers everything you need to know.

The Three Main European Time Zones

Western European Time: The UK, Ireland, and Portugal

The United Kingdom and Ireland use Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. Portugal uses the same offsets, called WET and WEST. Iceland is the notable exception in this group — it uses UTC+0 year-round with no Daylight Saving Time, meaning it is on the same time as the UK in winter but one hour behind the UK in summer.

The UK changes its clocks on the last Sunday of March (spring forward) and the last Sunday of October (fall back). This is the same schedule as the rest of the EU, which means the UK and continental Europe maintain consistent offsets throughout the year despite Brexit.

Central European Time: The Largest Zone

Central European Time (CET, UTC+1) is the most widely used time zone in Europe, covering the majority of the continent's population and economic activity. France, Germany, Italy, Spain, the Netherlands, Belgium, Austria, Switzerland, Poland, the Czech Republic, Hungary, Croatia, and many other countries all use CET in winter and CEST (Central European Summer Time, UTC+2) in summer. This means that Paris, Berlin, Rome, Madrid, Amsterdam, and Warsaw are all on the same clock.

Spain is a notable quirk within the CET zone. Geographically, Spain is at roughly the same longitude as the UK and Portugal, which means it should naturally be on UTC+0. However, Spain has been on CET since 1940, when Francisco Franco aligned Spain's clocks with Nazi Germany as a political gesture. This means that in summer, the sun sets in Madrid at around 9:30pm — unusually late for a country at that latitude — which is often cited as one reason why Spanish culture has traditionally featured late dinners and late nights.

Eastern European Time: Finland, Greece, and the Baltics

Eastern European Time (EET, UTC+2) covers the eastern edge of the EU: Finland, Estonia, Latvia, Lithuania, Greece, Romania, Bulgaria, and Cyprus. These countries use EEST (UTC+3) in summer. Ukraine also uses EET, as does Turkey — though Turkey abandoned Daylight Saving Time in 2016 and now stays on UTC+3 year-round, which means it is on the same time as the EET summer zone all year.

When Do European Clocks Change?

All EU member states (and the UK, which kept the same schedule post-Brexit) change their clocks on the same dates: the last Sunday of March (spring forward one hour) and the last Sunday of October (fall back one hour). This synchronisation means that the offsets between European countries remain constant throughout the year — London is always one hour behind Paris, Paris is always one hour behind Helsinki, regardless of the season.

The EU voted in 2019 to abolish Daylight Saving Time, with the change originally planned for 2021. However, as of early 2026, the directive has not been implemented because EU member states could not agree on whether to stay permanently on Standard Time or Summer Time. The clock changes continue as before while negotiations remain stalled.

Europe vs. the US: When the Offsets Change

One of the most practically important things to know about European time zones is that Europe and the United States change their clocks on different dates. The US springs forward on the second Sunday of March; Europe springs forward on the last Sunday of March. The US falls back on the first Sunday of November; Europe falls back on the last Sunday of October. This creates two short windows each year — typically two to three weeks in March and one to two weeks in October/November — when the transatlantic time difference is one hour different from its usual value.

For example, London is normally five hours ahead of New York. But in the two weeks between when the US springs forward and when the UK springs forward, London is six hours ahead. And in the two weeks between when the UK falls back and when the US falls back, London is only four hours ahead. If you have regular transatlantic calls, it is worth putting a reminder in your calendar for these transition weeks.

Practical Tips for Travelling Across Europe

If you are travelling from west to east across Europe — say, from London to Helsinki — you gain three hours over the course of the journey (one hour from UK to CET, two hours from CET to EET). If you are flying, your phone will update automatically when you land. If you are driving, you will cross the time zone boundary at some point and your phone will update then. The key thing to remember is that all EU countries change their clocks on the same dates, so you do not need to worry about DST creating unexpected surprises mid-trip.

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