Priests perform yagya on the occasion of the Annual Installation Ceremony (Protishtha Utsav) at Matri Mandir, Polo on Saturday. (ST)The Tetseo Sisters from Nagaland perform at a concert in the run up to the celebration for Women’s Day at Polo Ground on Saturday. (ST)Students from St Margaret Higher Secondary School and Laitumkhrah Bengali Secondary School take part in a Science fair at the Science Centre, Shillong Public School on the occasion of National Science Day on Saturday. The fair was organized by Agastya International Foundation and supported by World Bank Development Marketing.