A lot of information can be found on the intranet: https://intranet.cs.hku.hk/csintranet/contents/policy/index.jsp
E.g. one old two page guide: https://intranet.cs.hku.hk/csintranet/contents/policy/study/postgraduate/rpg.pdf
This section is supposed to extend this information or provide other information that new or existing students may find useful.
Academic dates: http://aao.hku.hk/sy3/plan-of-study/important-academic-dates/
Hong Kong holidays: http://www.gov.hk/en/about/abouthk/holiday/Free Microsoft Office 365: http://www.its.hku.hk/documentation/guide/others/mssa