Time zone is a term for different times in the world. The world is divided in 24 parts and each of them have different times. When you travel east, you will have to add hours to your initial time zone time, and if you are traveling west, you will subtract hours (an hour per time zone both ways).

Croatia is a part of the Central European time zone, UTC +1, and in summer time it is a part of the European Summer Time zone (EDST) (due to the European summer time change).

Daylight savings time

Daylight saving time (DST) or in Europe (EDST) is the practice of advancing clocks so that evenings have more daylight and mornings less. The clocks are adjusted forward one hour near the start of spring and backward in autumn.

In Croatia, the clocks are forwarded on the last Sunday in March and go backwards on the last Sunday in October. Be sure to account for the time change if you are coming to Croatia in that period.

GMT and UTC

Greenwich Mean Time (GMT) is a time system originally referring to mean solar time in Greenwich, London, and later became adopted as a global time standard. Starting from Greenwich to the east should be added for each time zone one hour or subtract an hour moving westward.

Coordinated Universal Time (UTC) was introduced in 1972. and the term Greenwich Mean Time (GMT) is no longer in use.