Ninoy Aquino Day is a national non-working holiday in the Philippines. It commemorates the assassination of former Senator Benigno "Ninoy" Aquino, Jr. He is a well-known opposition figure and critic of the then-President Ferdinand Marcos. The inaugural Ninoy Aquino Day was celebrated in 2004 after then-President Gloria Macapagal-Arroyo declared it as a day to commemorate his death anniversary.

In the Philippines, there are only two kinds of holidays: regular holidays, and special non-working holidays.

Regular holidays are those that usually have a fixed date, such as New Year's Day, Independence Day, and Christmas Day.

Special Holidays, on the other hand, are more flexible. Apart from being enacted by Congress, they can also be declared by the President of the Philippines.

Get a quick overview of the political history of the Philippines from the time the Spaniards colonised the country in 1521 to its current democratic government.