Hey Harsh!

To be eligible for the exam, applicants must be between the ages of 16.5 and 19.5 years. So, according to the criteria you will be eligible to give the exam in 2021. The applicant's date of birth must match the date of birth on the 10th or Secondary School leaving Certificate. Moreover, after the written test results are announced, candidates must present Certificates as evidence of age. Applicants who are appearing for 12th class exams are eligible to apply for NDA exam.