Osmeña Day, observed in Cebu, Philippines, every September 9, commemorates the birthday of Sergio Osmeña Sr., the fourth President of the Philippines, born in Cebu in 1878. This special non-working holiday was established in 1990 to honor Osmeña's contributions to the nation, including his role in advocating for Philippine independence and serving as president during World War II. The day is marked by various celebrations and activities that reflect on Osmeña's legacy and impact on Philippine history. Notably, Osmeña's political career began when he was appointed acting governor of Cebu in 1903, leading to his election as governor in 1906 and later as a senator. His leadership during the Japanese occupation and subsequent efforts in government restoration are significant aspects of his legacy. The holiday serves as a reminder of his achievements and the historical context of his presidency.