MANILA, Mar. 15 -- Philippine Navy will send Barko ng Republika ng Pilipinas (BRP) Apolinario Mabini to Philippine Sea in a meeting procedure with Spanish Navy's Buque Escuela de la Armada Española Juan Sebastián Elcano on March 16, 2021. The two navy ships will join the Philippine Government in marking the start of the 2021 Quincentennial Commemorations in the Philippines at Suluan Island, Guiuan, Eastern Samar. On the said date, the country commemorates the 500th anniversary of the Philippine part in the first circumnavigation of the world, which will begin in Guiuan, Eastern Samar, and will close in Sarangani Island, town of Sarangani, Davao Occidental on 28 October, respectively. These milestone events are collectively known as the 2021 Quincentennial Commemorations in the Philippines. Thirty-four (34) historical markers are to be unveiled within this celebratory period.