Here is a list of the Public Holidays in the Philippines for 2009. Most private businesses stay open during most (but not all) holidays but government offices and banks will always close.
January, 1st, New Year's Day
Febuary, 24th, EDSA Revolution Day.
April, 9th, Maundy Thursday.
April, 10th, Good Friday.
May, 1st, Labour Day.
June, 12th, Independence Day.
August, 30th, National Heroes' Day.
September, 21st, Eid Ul Fitr (Ramadan)(varies).
November, 1st, All Saints' Day.
November, 2nd, All Soul's Day
November, 30th, Bonifacio Day.
December, 25th, Christmas Day.
December, 30th, Rizal Day.
December, 31st, New Year's Eve.
Please not that if a holiday falls on a Saturday or Sunday, the corresponding "Day Off" will be on the following Monday!