James Leonard Tagle Gordon Day, observed in Olongapo City and the Subic Bay Freeport Zone, recurs every January 17 to commemorate the birthday of James Leonard Tagle Gordon, the first mayor of Olongapo. Born on January 17, 1917, Gordon was instrumental in advocating for the city's independence from American military rule, which persisted even after the Philippines gained independence in 1946. He played a key role in the transition of Olongapo from a U.S. Naval Reservation to a municipality in 1959 and later became its first elected mayor in 1963. The day was established as a special nonworking holiday by the Congress of the Philippines in 2019, allowing residents to honor Gordon's legacy and contributions to their city. Celebrations typically include local events and activities that reflect on his impact on the community.