Yes, with a DOB of December 20, 2006, you are eligible for NDA 1, 2026 as you’ll be between 16.5 to 19.5 years old in April 2026.

NDA 1, 2026 Exam is in April 2026.

Application starts around December 2025.

To be eligible for NDA 1 2026, you need to meet the age criteria set by UPSC

According to these criteria, to be eligible for NDA 1 2026, you must be born between 2nd July 2007 to 1st July 2010 , and according to your age you are not eligible for NDA 1 2026.Since training is long and starts right after 12th , there is strict age window.