If you were born on September 19, 2007, you will be eligible for NDA 1 exam in 2026. The NDA exam usually requires candidates to be between 16.5 and 19.5 years old on the date of the exam. Since you will turn 18 in 2025, you will fall within the eligible age range for the 2026 exam. Just make sure to check the official notification when it’s released for exact dates and eligibility details. Good luck with your preparation!