Prof Day is Professor emeritus of University of Cape Town (UCT) and University of the Western Cape with extensive managerial experience as Deputy Dean of the Science Faculty and Head of the Department of Zoology for UCT. She has long-standing experience in water ecology, serving on numerous Steering Committees for the South African Water Research Commission. She sat on the Board of the Water Research Fund for Southern Africa from 2017-2019 and, more recently, on the Inter-Universities Council of East Africa's Lake Victoria Research Board.