1 January
New Year's Eve
16 February
Independence Day
11 March
Restoration of Lithuania’s Independence
4-5 April 2018 Easter 
1 May
International Labour Day
First Sunday of May
Mother’s Day
First Sunday of June
Father’s Day
24 June
Feast of St. John
6 July
Crowning of Mindaugas (Day of Statehood)
15 August
Feast of Assumption
1 November
All Saints Day
24 December
Christmas Eve
25-26 December


You can find full academic calendar here