Dear 

The process for admision is that after completing your 12th you need to fill an application form then on date and plae told by the cllege you need to give entrance exam and based on your rank you will be alloted an college and this is how your admision will be final. The dates cant be told as every university has different dates and also you have not mentioned that for which university you are looking for so for dates you need to visit the websites of the ccolleges you are looking for.