New Year's Day
Easter Sunday
Easter Monday
Labour Day
Constitution Day
Pentecost Sunday
Corpus Christi
Assumption
All Saints' Day
Independence Day
Christmas
Boxing Day
  January
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 ‹ 1663
1664
1665 › 
# Date Public holiday
1Tuesday, 1 January 1664 New Year's Day
2Sunday, 13 April 1664 Easter Sunday/Easter Sunday / Katyn Massacre Day
3Monday, 14 April 1664 Easter Monday
4Thursday, 1 May 1664 Labour Day
5Saturday, 3 May 1664 Constitution Day
6Sunday, 1 June 1664 Pentecost Sunday
7Thursday, 12 June 1664 Corpus Christi
8Friday, 15 August 1664 Assumption of Mary
9Saturday, 1 November 1664 All Saints' Day
10Tuesday, 11 November 1664 Independence Day
11Thursday, 25 December 1664 Christmas Day
12Friday, 26 December 1664 Boxing Day