The UPSC is currently accepting online applications for NDA 1 exam until January 9, 2024. Eligible candidates, including Indian citizens, Nepali subjects, and individuals of Indian origin, can register on the official website. Applicants must be unmarried and born between July 2, 2005, and July 1, 2008. Educational qualifications include a 12th Class pass for the Army Wing and 12th Class pass with Physics, Chemistry, and Mathematics for Air Force and Naval Wings.