According to the information that we have, the public holidays in Angola for 2015 are as follows:
January 1st (Thursday)
February 4th (Wednesday)
February 17th (Tuesday)
March 8th (Sunday)
April 3rd and 4th (Friday and Saturday)
May 1st (Friday)
September 17th (Thursday)
November 2nd and 11th (Monday and Wednesday)
December 25th and 26th (Friday and Saturday)