Sir, after clearing the NDA exam, the time it takes to reach the academy can vary depending on several factors. Here is a detailed explanation of the process:

Selection Process:
- Once you clear the NDA exam, you will be called for the SSB interview.
- The SSB interview consists of various stages such as screening, psychological tests, group testing, and personal interviews.

Merit List:
- After the completion of the SSB interview, a merit list is prepared based on your performance.
- If you are selected in the merit list, you will receive a joining letter from the academy.

Joining the Academy:
- The joining letter will have all the necessary instructions regarding reporting date, location, and other details.
- Typically, candidates are required to report to the academy within a few weeks of receiving the joining letter.

Training Period:
- Once you report to the academy, you will undergo rigorous training for a duration of approximately 3 years.
- The training includes academic studies, physical training, and various military exercises.

Conclusion:
- In conclusion, the time it takes to reach the academy after clearing the NDA exam can vary depending on the selection process and the training period.
- It is important to stay updated with the instructions provided in the joining letter to ensure a smooth transition to the academy.