Latvia

 Russia

January 1 New Years Day
The Friday before Easter Sunday Good Friday
March/April Easter Sunday
The day after Easter Sunday Easter Monday
May 1 Labour Day
May 4 Declaration of independence
June 23 Midsummer Eve
June 24 Midsummer
November 18 Proclamation of the Republic of Latvia
December 24 Christmas Eve
December 25 Christmas Day
December 26 Christmas Day
December 31 New Years Eve

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