Greece is in the Eastern European Time Zone, with local time set at GMT +2 hours. Every last Sunday in March, clocks in Greece move one hour forward for daylight saving time and return to the original time on the last Sunday in October.
HOLIDAYS
National Holidays and Public Holidays
New Year's Day: January 1
Epiphany: January 6
Clean Monday: 41 days before Easter
Independence Day/Annunciation: March 25
Easter Sunday and Monday
Labor Day: May 1
Dormition of the Virgin Mary: August 15
National Holiday (Ohi Day): October 28
Christmas: December 25 & 26
To visit Greece, you will need
Identity Card:If you are from a Schengen Agreement member state, you can use your national identity card to enter and stay in Greece for up to 3 months. A passport is not required for entry but may be needed for other transactions such as currency exchange or purchases.
Visa: If you are from a non-Schengen country, you will need a visa. Before your trip, check with local Greek embassies, consulates, or travel agents for relevant information.
Passport:If you are from a non-European Union country, you will need a passport. This allows you to visit and stay in Greece for up to 3 months within a 6-month period.