Tangub City Charter Day is observed in Tangub City, Philippines, every February 28, commemorating the official inauguration of the city. This special non-working holiday celebrates Tangub's history, which includes its origins as a settlement of the Subanen people and its evolution from a municipality to a city. The name "Tangub" is derived from the Subanen word "tangkub," referring to a rice basket, with local legends explaining its origin through encounters between Spanish soldiers and locals. The city was chartered on June 17, 1967, and formally inaugurated on February 28, 1968. The celebration features an eleven-day festival beginning on February 18, culminating in colorful public parades, performances, dance festivals, and competitions, including the Intercollegiate Games between local colleges. This vibrant event highlights the city's cultural heritage and community spirit.