from 21st April 2010 to 9th January 2015 Dissanayaka Mudiyanselage Jayaratne (Sinhala: දිසානායක මුදියන්සේලාගේ ජයරත්න, Tamil: திசாநாயக்க முதியன்சேலாகே ஜயரத்ன; 4 June 1931 – 19 November 2019, known as D. M. "Di Mu" Jayaratne, was a veteran Sri Lankan politician who was Prime Minister of Sri Lanka from 2010 to 2015. A founding member of the Sri Lanka Freedom Party, Jayaratne was first elected to parliament in 1970. He was sworn in as Prime Minister on 21 April 2010.   Early life D. M. Jayaratne was born on 4 June 1931. He was educated at Doluwa Maha Vidyalaya and at Zahira College in Gampola, a town just outside Kandy. Following the founding of the Sri Lanka Freedom Party in Kandy in 1951 by S. W. R. D. Bandaranaike, Jayaratne worked as a teacher at Doluwa Maha Vidyalaya. He later worked as Postmaster at Doluwa from 1960 to 1962.