Below are Public Holidays for the January 2009-December 2010 period.

2009
1 Jan New Year's Day.
6 Jan Epiphany.
12 Jan Birthday of Eugenio María de Hostos.
19 Jan Martin Luther King Day. 
16 Feb President's Day.
22 Mar Emancipation of the Slaves. 
10 Apr Good Friday.
20 Apr José de Diego Day.
25 May Memorial Day.
4 Jul US Independence Day. 
20 Jul Luis Muñoz Rivera's Birthday.
25 Jul Constitution Day.
27 Jul José Celso Barbosa's Birthday. 
7 Sep Labour Day. 
12 Oct Columbus Day.
11 Nov Veterans' Day.
19 Nov Discovery of Puerto Rico Day. 
26 Nov Thanksgiving Day.
25 Dec Christmas Day.

2010
1 Jan New Year's Day.
6 Jan Epiphany.
14 Jan Birthday of Eugenio María de Hostos. 
18 Jan Martin Luther King Day.
15 Feb President's Day.
22 Mar Emancipation of the Slaves. 
2 Apr Good Friday.
21 Apr José de Diego Day.
24 May Memorial Day.
4 Jul US Independence Day. 
19 Jul Luis Muñoz Rivera's Birthday.
25 Jul Constitution Day.
27 Jul José Celso Barbosa's Birthday. 
6 Sep Labour Day. 
11 Oct Columbus Day.
11 Nov Veterans' Day.
19 Nov Discovery of Puerto Rico Day.
25 Nov Thanksgiving Day.
25 Dec Christmas Day.

Each town celebrates a festival or fiesta in honour of a local patron saint. These can last up to 10 days.