New Year's Day
Good Friday
Freedom Day
Labour Day
Portugal Day
Corpus Christi
Assumption of Mary
Republic Day
All Saints' Day
Restoration of Independence
Immaculate Conception
Christmas Day
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
 ‹ 1665
1666
1667 › 
# Date Public holiday
1Friday, 1 January 1666 New Year's Day
2Friday, 16 April 1666 Good Friday
3Sunday, 25 April 1666 Freedom Day
4Saturday, 1 May 1666 Labour Day
5Thursday, 10 June 1666 Portugal Day
6Thursday, 17 June 1666 Corpus Christi
7Sunday, 15 August 1666 Assumption of Mary
8Tuesday, 5 October 1666 Republic Day
9Monday, 1 November 1666 All Saints' Day
10Wednesday, 1 December 1666 Restoration of Independence
11Wednesday, 8 December 1666 Immaculate Conception
12Saturday, 25 December 1666 Christmas Day