Greetings,

The lower age limit for sitting in NDA exam is 15.7 years and 16 years during the commencement of the course. While, the upper age limit is 18.7 years and 19 years while joining the course. On the basis of your information you will be completing 19 years of age in May 2023 and the exam is usually conducted in October or November. Thus, you will be in eligible.