New Year's Day
Epiphany
Maundy Thursday
Good Friday
Labour Day
Labour substitute
Assumption
Asturias Day
All Saints' Day
Constitution Day
Immaculate Concep.
Christmas Day
Christmas substitute
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
 ‹ 1565
1566
1567 › 
# Date Public holiday
1Saturday, 1 January 1566 New Year's Day
2Thursday, 6 January 1566 Epiphany of the Lord
3Thursday, 14 April 1566 Maundy Thursday
4Friday, 15 April 1566 Good Friday
5Sunday, 1 May 1566 Labour Day
6Monday, 2 May 1566 Monday following Labour Day/Day of the Community of Madrid / Monday following Labour Day
7Monday, 15 August 1566 Assumption of the Virgin Mary
8Thursday, 8 September 1566 Asturias Day
9Tuesday, 1 November 1566 All Saints' Day
10Tuesday, 6 December 1566 Spanish Constitution Day
11Thursday, 8 December 1566 Immaculate Conception
12Sunday, 25 December 1566 Nativity of the Lord
13Monday, 26 December 1566 Monday following Christmas Day/Saint Stephen’s Day — Second Day of Christmas / Monday following Christmas Day