Hello Gurmeet,
LLM is a master degree in Law with a specialisation in a particular area. For this there are various specialisations offered by different universities. But it is not necessary that, the one in which you are interested to do specialisation is offered by all the universities for duration. 

Most of the nlus offer ONE YEAR LLM ONLY. As per the UGC guideliness issued during 2013 they have accepted the One Year llm. 
So, I advice you first decide the area in which you want to do specialisation and then select the universities and colleges according to it.
If you are going to apply for 2019 session then, I would suggest you to visit clat2019 official site and from there you can visit or download the brochures of all 14 colleges and look into the LLM courses they are providing you.

I hope this information helps you.

All the best !!

Hello gurmeet

Please have a look at link below to get the entire information about national law university.

https://www.google.com/amp/s/www.careers360.com/university/national-law-university-new-delhi/amp

Revert for further assistance.

Thanks for contacting us.