If you are in the first year you can get a healthy short Diwali vacation of around 15-20 days.. And if you are in the second or third or final years of your MBBS course then holidays would just be those 5 important days of Diwali. If you have some personal reasons like maybe you might be staying away from family and want to come home then you can form a group and converse with your respective concerneced teachers in the college.