Tamang community under the Mahayan sect of Buddhist religion, observed Sonam Lhosar across the nation this year on 24 January 012.The meaning of 'Lho' in Tibetan language is ââ¬Ëyearââ¬â¢ and 'Sar' means ââ¬Ënewââ¬â¢. Sonam Lhosar is the celebration of Tamang's new year. Small boys in wearing tamang dress in Tundikhel, Kathmandu.