New Year's Day
Epiphany
Saint Joseph's Day
Maundy Thursday
Good Friday
Labour Day
Labour substitute
Assumption
All Saints' Day
Constitution Day
Immaculate Concep.
Christmas Day
Christmas substitute
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
 ‹ 1576
1577
1578 › 
# Date Public holiday
1Saturday, 1 January 1577 New Year's Day
2Thursday, 6 January 1577 Epiphany of the Lord
3Saturday, 19 March 1577 Saint Joseph's Day
4Thursday, 14 April 1577 Maundy Thursday
5Friday, 15 April 1577 Good Friday
6Sunday, 1 May 1577 Labour Day
7Monday, 2 May 1577 Monday following Labour Day/Day of the Community of Madrid / Monday following Labour Day
8Monday, 15 August 1577 Assumption of the Virgin Mary
9Tuesday, 1 November 1577 All Saints' Day
10Tuesday, 6 December 1577 Spanish Constitution Day
11Thursday, 8 December 1577 Immaculate Conception
12Sunday, 25 December 1577 Nativity of the Lord
13Monday, 26 December 1577 Monday following Christmas Day/Saint Stephen’s Day — Second Day of Christmas / Monday following Christmas Day