CET Time Zone – Central European Time (+01:00)

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UTC Offset +01:00

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Population Served 500,000,000+

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Territories & Nations 35 Nations

DZ ES TN SJ +31 more

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Reference Meridian 15° East (passes through Görlitz, Germany and Bornholm, Denmark)

⚙️ Technical Specifications & Standards

Official chronometric properties, ISO standards, and international database registry identifiers for Central European Time:

Abbreviation Code CET

Official Full Name Central European Time

UTC / GMT Offset +01:00

ISO 8601 Notation +01:00

Reference Longitude 15° East (passes through Görlitz, Germany and Bornholm, Denmark)

Military / NATO Zone A (Alpha Time)

Windows Registry Timezone W. Europe Standard Time

Active Season Winter (Autumn to Spring across Europe)

☀️ Daylight Saving Time (DST) Transitions

⬆️ Spring Forward (Clocks Advance)

Last Sunday in March at 02:00 AM CET (Clocks advance to CEST, UTC+2)

⬇️ Fall Back (Clocks Return)

Last Sunday in October at 03:00 AM CEST (Clocks return to CET, UTC+1)

🗺️ Observing Jurisdictions & Subdivisions

35 Sovereign Nations

Sovereign nations, administrative subdivisions, and regional territories officially operating under CET:

Svalbard and Jan Mayen →

Netherlands →

North Macedonia →

Bosnia and Herzegovina →

Liechtenstein →

Switzerland →

Regional Subdivisions & Territory Details

📍 European Union members (France, Germany, Italy, Spain, Poland, Netherlands, Belgium, Sweden, Austria, Czechia, Hungary, Denmark, Slovakia, Croatia, Slovenia, Luxembourg, Malta)

📍 Non-EU nations (Switzerland, Norway, Serbia, Bosnia, Albania, North Macedonia, Montenegro, Monaco, Liechtenstein, Vatican City, San Marino, Andorra)

📍 North Africa (Algeria and Tunisia observe UTC+1 year-round)

💼 Financial Markets & Trading Hours

Central European bourses share morning trading with London and late afternoon trade with New York, handling the bulk of European sovereign bond and equity turnover.

Deutsche Börse (Frankfurt Stock Exchange) Frankfurt

Local Hours: 09:00 - 17:30 CET
UTC Window: 08:00 - 16:30 UTC

Euronext Paris Paris

Local Hours: 09:00 - 17:30 CET
UTC Window: 08:00 - 16:30 UTC

Borsa Italiana Milan

Local Hours: 09:00 - 17:30 CET
UTC Window: 08:00 - 16:30 UTC

SIX Swiss Exchange Zurich

Local Hours: 09:00 - 17:30 CET
UTC Window: 08:00 - 16:30 UTC

BME Spanish Exchanges Madrid

Local Hours: 09:00 - 17:30 CET
UTC Window: 08:00 - 16:30 UTC

🏙️ Major Cities in CET

Primary metropolitan centers and financial hubs observing this time zone:

📜 Adoption History & Astronomical Facts

Year Established: 1893

Adopted by the German Empire on April 1, 1893, to replace five railway time zones with a single unified standard. Spain had run on Greenwich Mean Time until 1940, when General Francisco Franco pushed Spanish clocks forward an hour to match Berlin.

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Did You Know?

Because Spain kept Central European Time after World War II despite sitting on the western edge of Europe, solar noon in western Galicia arrives around 2:30 PM in summer, which helps explain why Spanish lunches regularly start at 2:00 PM and dinners at 10:00 PM.

❓ Frequently Asked Questions about CET

What does CET stand for?

CET stands for Central European Time, which is one hour ahead of Coordinated Universal Time (UTC+1).

Is CET the same as CEST?

No. CET is the winter schedule at UTC+1, while CEST is Central European Summer Time at UTC+2.

Which countries use Central European Time?

Over 30 countries across mainland Europe observe CET, including Germany, France, Italy, Spain, Switzerland, the Netherlands, and Poland.

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