Dear Vamsi, as per the eligibility criteria for Sastra University -

• Age limit - Candidates must have completed 19 years of age as on July 1, 2019 to be eligible to apply.

And as per your date of birth you will be completing 19 years of age on 19th December which is around 6 month less than the mentioned criteria for age. 

All the best. 

Feel free to ask for any query.