Answer:1. Emilio Aguinaldo – Independence Day (originally June 12, 1898)2. Manuel L. Quezon – National Language Day, Philippine Commonwealth celebrations3. Jose P. Laurel – Labor Day observance4. Sergio Osmeña – Thanksgiving and Liberation Day observances5. Manuel Roxas – Philippine Independence celebrations6. Elpidio Quirino – National Heroes Day (officially moved to last Monday of August)7. Ramon Magsaysay – Labor Day, other civic holidays8. Carlos P. Garcia – Araw ng Watawat (Flag Day), Thanksgiving Day9. Diosdado Macapagal – Araw ng Kagitingan (April 9) officially established10. Ferdinand Marcos – National holidays including EDSA precursor observances, Marcos-declared special holidays11. Corazon Aquino – Holy Week and People Power anniversaries recognized12. Fidel V. Ramos – Ramos-declared special holidays and National Heroes Day observances13. Joseph Estrada – National holidays maintained, Eid’l Fitr recognized as special non-working day14. Gloria Macapagal-Arroyo – Eid’l Adha, National Teachers’ Day15. Benigno S. Aquino III – National holidays maintained, National Indigenous Peoples’ Day16. Rodrigo Duterte – Eid’l Fitr, Eid’l Adha, Independence Day maintained17. Ferdinand “Bongbong” Marcos Jr. – Maintains national holidays, special non-working days declared as needed