Quirino Day is observed in the Philippine province of Ilocos Sur every November 16 to commemorate the birthday of Elpidio Quirino, the 6th President of the Philippines, who was born in Vigan on this date in 1890. This special non-working holiday was declared in 1979 by President Ferdinand E. Marcos. The day serves to honor Quirino's contributions to the nation, particularly his efforts in post-war reconstruction, social and agrarian reforms, and economic negotiations. During his presidency, he faced challenges such as an impeachment attempt and insurgencies. Celebrations typically include local events that reflect on Quirino's legacy and the impact of his governance on the province and the country.