Masters

Generally the admissions happen between may to september, but since you haven't mentioned any specific college it might be inaccurate for every college. The admission dates vary significantly for different colleges depending upon exams and all these things.

Several universities offer Master's degrees in either Forensic Science or Nuclear Medicine, but there are not many that offer both as a combined course. Some prominent institutions offering these programs individually include AIIMS Delhi, CMC Vellore, and JIPMER Puducherry for Nuclear Medicine, and NIMS University, SGT University, and AIIMS Rishikesh for Forensic Medicine. 

In India there are many universities which offers Masters in nursing or pyscology online majority of these are mentioned below: 

IGNOU ( indra Gandhi National open University) 

Amity University 

Lovely professional University 

Chandigarh University 

Suresh Gyan vihar

Annaamalai University 

University in Mumbai 

Imts institute 

Parul university 

Nalanda 

University of Delhi and many more

GTTC mostly sticks to diploma-level stuff like Mechatronics, Tool & Die, and Precision Manufacturing. They don't really offer postgrad (PG) courses. But if you've done a diploma, you can either level up with advanced diplomas or go for lateral entry into engineering degree programs elsewhere. Basically, use GTTC as your base, then upgrade outside for higher studies.