This info is partly true and false. Yes it is true that Proc # 295 defined the dates here as holidays but dates for Eidul Fit’r and Eidul Adha are yet to be determined. As stated in the proclamation in 

“SECTION 2. The proclamations declaring national holidays for the observance of Eid’l Fitr and Eidul Adha shall hereafter be issued after the approximate dates of the Islamic holidays have been determined in accordance with the Islamic calendar (Hijra) or the lunar calendar, or upon Islamic astronomical calculations, whichever is possible or convenient. To this end, the National Commission on Muslim Filipinos (NCMF) shall inform the Office of the President on which day the holiday shall fall.”

As of the date of this comment, the dates are still unclear.