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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# Date Public holiday
1Thursday, 1 January 1637 New Year's Day
2Sunday, 12 April 1637 Easter Sunday
3Monday, 13 April 1637 Easter Monday/Easter Monday / Katyn Massacre Day
4Friday, 1 May 1637 Labour Day
5Sunday, 3 May 1637 Constitution Day
6Sunday, 31 May 1637 Pentecost Sunday
7Thursday, 11 June 1637 Corpus Christi
8Saturday, 15 August 1637 Assumption of Mary
9Sunday, 1 November 1637 All Saints' Day
10Wednesday, 11 November 1637 Independence Day
11Friday, 25 December 1637 Christmas Day
12Saturday, 26 December 1637 Boxing Day