Austria

Republic Day, November 12. Austria declared itself a republic on this day in 1918.
National Day, May 15. Anniversary of the Austrian State Treaty, signed in 1955.
National Holiday of Austria, October 26. Commemorates the day in 1955 when the Soviet Union ended its occupation, and a constitutional law of perpetual Austrian neutrality was inacted.
Second Republic Day, April 27. Commemorates the anniversary of the establishment of the Second Republic of Austria in 1945.

Public holidays   New Year's Day, Epiphany, Easter Monday, Labor Day, Ascension Day, Whit Monday, Corpus Christi, Assumption, National Holiday (Oct. 26), All Saints' Day, Immaculate Conception, Christmas, and Saint Stephen's Day.