Sweden

Constitution Day, June 6. Anniversary of the adoption of the constitution of 1809. Jointly celebrated with Sweden's Flag Day which commemorates June 6, 1523, when Gustavus I ascended to the throne.
Flag Day, June 6. Anniversary of Gustavus I ascension to the throne in 1523.
Birthday of the King, April 30. A national holiday honoring King Carl XVI Gustaf's birthday.
Gustav Adolf Day.
Luciadagen, December 14. Saint Lucia's Day. Ushers in the Yuletide. Before the Gregorian calendar was adopted, Lucia Day coincided with the winter solstice. The Swedes celebrate it by selecting "Lucia Brides" who dress up as St. Lucia and wear a crown of candles in their hair. A national Lucia is selected and honored in Stockholm with a parade and the Lucia Ball. See also Saint Lucia and Saint Canute.
Midsummer Celebration, June 22. Midsummer Day.
Waffle Day, March 25. Same as Annunciation, but is thusly known in Sweden because of the custom of making waffles.
Nobel Day, December 10. This is the day of the Nobel Prize ceremony at the Stockholm City Hall in Sweden. The Nobel Peace Prize is presented at the same time in Norway.

Waffle day is from a pun on "Our Lady's Day" which in Swedish is Vårfrudagen. Spoken sloppily it sounds almost like Vårffeldagen, or Waffle Day. Hence it is a good day to make Swedish waffles. And, hey, ANY day is a good day for that, so why not March 25th? -- Peter Neilson

Public holidays   New Year's Day, Epiphany, Good Friday, Easter Monday, May Day, Ascension Day, Whit Monday, Midsummer, Christmas, St Stephen's Day.