The Misadventures of Penoi

Manila Bulletin posted on their website a good breakdown of Philippine holidays and long weekend schedule for 2010

January 1 (Fri) - New Year's Day (five-day long weekend from December 30 to January 3)
February 23 (Mon) - EDSA Revolution Anniversary (holiday for schools only, three-day long weekend from February 21 to 23)
April 1 (Thu) - Holy Thursday
April 2 (Fri) - Good Friday (four-day long weekend from April 1 to 4)
April 9 (Fri) - Araw ng Kagitingan (three-day long weekend from April 9 to 11)
May 1 (Sat) - Labor Day
June 14 (Mon) - Independence Day (three-day long weekend from June 12 to 14)
August 23 (Mon) - Ninoy Aquino Day (three-day long weekend from August 21 to 23)
August 30 (Mon) - National Heroes Day (three-day long weekend from August 28 to 30)
September - Eid'l Fitr (to be announced, calculated September 10, possible three-day long weekend from September 10 to 12)
November 1 (Mon) - All Saints Day (three-day long weekend from October 30 to November 1)
November - Eid 'l Adha (to be announced, calculated November 16)
November 29 (Mon) - Bonifacio Day (three-day long weekend from November 27 to 29)
December 24 (Fri) - Non-Working Holiday
December 25 (Sat) - Christmas
December 27 (Mon) - Rizal Day (four-day long weekend from December 24 to 27)
December 31 (Fri) - Non-Working Holiday
January 1 - (Sat) New Year's Day (three-day long weekend from December 31 to January 2)