You are reading the 2022/23 Academic Calendar. The 2021/22 version remains in effect until 31 August 2022 and is available here
The degrees of Doctor of Laws (Honoris Causa), Doctor of Science (Honoris Causa), and Doctor of Letters (Honoris Causa) - LL.D., D.Sc., and D.Litt., respectively - are the honorary degrees conferred from time to time by the Senates of the University upon persons who have achieved distinction in scholarship or public service.