@Viswamitra sir both of us are correct. If you are an NRI with a valid Indian passport, the 182 day rule is not applicable. However if you are a foreign citizen with an OCI card, you still need to reside in India for 182 days in a 12 month period prior to applying for Aadhar. aadhaar: UIDAI Aadhaar: How NRI can get Aadhaar card after arriving in India - The Economic Times