There are four main Time Zones in Europe.
The four main time zones are the Western European Time/Greenwich Mean Time (UTC±00:00), the Central European Time (UTC+01:00), Eastern European Time (UTC+02:00), and the Further Eastern European Time/Moscow Time/Turkey Time (UTC+03:00).
The Western European Time/Greenwich Mean Time is observed in countries and territories located in the Western part of Europe such as the United Kingdom, Ireland, Portugal, Iceland, Canary Islands, Faroe Islands, etc.
The Central Europe Time is used in Central European countries such as Austria, Belgium, mainland Denmark, mainland France, Germany, Italy, Poland, mainland Spain, Albania, Norway, Switzerland, Hungary, Sweden, Netherlands, Slovakia, and Croatia, etc.
The Eastern Time Zone is observed in Bulgaria, Estonia, Finland, Greece, Ukraine excluding except Crimea, Luhansk, and Donetsk, Turkey, Latvia, Moldova, Romania, Lithuania, and Kaliningrad in Russia.
Countries and regions observing the Further Eastern European Time/Moscow Time/ are Belarus and the Western part of Russia. It is also used in the Ukrainian parts of Crimea, Luhansk, and Donetsk.
There are other time zones such as the Atlantic/Azores Time, which is used in Azores, an autonomous region of Portugal. Some parts of Russia in far eastern Europe follow the +5 time-zone.
The time-zones which use daylight saving time are Atlantic/Azores Time, Western European Time/Greenwich Mean Time, the Central European Time, and the Eastern European Time.