Official holidays

January 1st: New Year's Day
January 6th: Three Kings Day, Epiphany.
March or April: The sacred week, Good Friday. (Date changes every year)
May 1st: Workers’ Day
May 15th: Madrid's patron saint (San Isidro)
August 15th: Assumption of Mary
October 12th: Spanish National Day
November 1st: All Saints’ Day (Halloween)
December 6th: Constitution Day
December 8th: Immaculate Conception
December 25th: Christmas
Each region has its special local holidays. Holiday dates slightly vary from one year to another.

Madrid - Kingdom of Spain