Denmark

 Russia

January 1 - New Years Day
March 20 - Maundy Thursday
March 21 - Good Friday
Variable date - Easter Monday
April 18 - General Prayer Day
May 1 - Labour Day and Ascension Day
May 12 - Whit Monday
June 5 - Constitution Day
December 24 - Jul (Denmark) (Christmas Eve)
December 25 - Jul (Denmark) (Christmas Day)
December 26 - Boxing Day

January 1 New Year
January 7 Christmas
January 14 New Year according to Julian Calendar
January 25 Tatiana Day
February 14 Valentines Day
February 23 Defender of the Fatherland Day
March 8 International Womens Day
A week before the Great Lent Maslenitsa
April Easter
May 1 Spring and Labour Day
May 9 Victory Day
June 12 Russia Day
July 7 Ivan Kupala (St. John the Baptists Day)
August Troitsa (the Trinity)
November 4 Unity Day