I get asked this question every year: Is December 8 a holy day of obligation for Catholics?
Yes. It is a Holy Day of Obligation as the Church celebrates the feast of the Immaculate Conception. Check with your churches for mass schedules. Usually, there are more masses celebrated on December 8.
Visit mass-schedules.com, which has a comprehensive list of mass schedules in the Philippines.
EWTN also has television specials airing on December 8.
God bless!