Silmugi Festival falls on 20th January in honor of its patron saint where in Silmugi is an old name of the town of Borbon. One of their highlights is a street dancing that involved a folk prayer for bounitful harvest.
Accordng to the history Silmugi River located in between the barangays of Poblacion and Cadaruhan which the river played a big part during Borbon's formulation as a town. When the river was so big and wide the boat can make a travel. Theres also a rainwater from the mountain barangays cascaded and flowed into the ocean. It became the main gateway of many residents who lived in the mountains and hillside of Borbon when they visited the coastal barangays to do their barter and trade business.