"Sec. 30.     Special holiday declared by the President of the Philippines. — The President of the Philippines may, in his discretion, proclaim any other day a special public holiday for a particular date, and in calling a special election for a member of the Congress of the Philippines, or for a provincial office he shall limit such holiday, if one is declared, to the particular district, or province where the election is held: Provided, That October twenty of every year shall be a special holiday in the Province of Leyte."