If I understand correctly, you are asking how many days it takes to link a PAN (Permanent Account Number) with an Aadhaar (a 12-digit unique identification number issued by the Unique Identification Authority of India). The process of linking PAN with Aadhaar typically does not take more than a few minutes or hours, depending on the method used.

In India, there are multiple ways to link PAN with Aadhaar:

1. Online: You can visit the income tax e-filing website (pancardapplyonline.com) and follow the instructions to link your PAN with Aadhaar online. This process usually takes just a few minutes.
2. SMS: You can also link your PAN with Aadhaar by sending an SMS from your registered mobile number. The format of the SMS and the number to which it should be sent may vary, so it’s advisable to check the official guidelines provided by the income tax department.
3. Offline: If you prefer an offline method, you can visit the nearest PAN service center or Aadhaar enrollment center to link your PAN with Aadhaar. The process may require filling out a form and providing the necessary documents. The linking is usually done immediately or within a few hours.

It’s important to note that the specific time taken to link PAN with Aadhaar may vary depending on the platform or service center you choose, as well as any potential technical or administrative factors. However, in most cases, the linking process is relatively quick and should not take more than a few hours.