Ph.D. duration of study depending on the branch and research.
There are two main masters degree courses are that coursework and research. Duration of the study is 2 years, about 3-4 days per week.
Graduate Diploma is the first year program of the Master’s degree for master’s courses that have half a year, 1 year or 2 years duration.
Graduate Certificate is the first semester program of the master’s degree that has half-year study period.