Sri Lanka NIC Details app is a very useful utility to identify hidden details from the Sri Lanka NIC number.
After you are typing the NIC number in the search field and hit the search button it will identify whether the entered number is new or old and will extract and provide the below details.

Date of birth,
Age,
Birthday of the week,
Gender,
Citizenship(For old NIC numbers),
New NIC number(If you entered the old one).

And also you can change the language to Sinhala if you prefer.

*All the information related to this app will not be shared with any third party.