Sure, I can help you with that!
You can use the following formula in cell A3 to extract the date of birth from the ID number:
Formula:
=IF(LEFT(A2,1)="0",DATE(2000+MID(A2,1,2),MID(A2,3,2),MID(A2,5,2)),DATE(1900+MID(A2,1,2),MID(A2,3,2),MID(A2,5,2)))
Let me explain how this formula works:
- The IF function checks if the first character of the ID number is 0. If it is, it assumes that the person was born in the 21st century and adds 2000 to the year. If it's not, it assumes that the person was born in the 20th century and adds 1900 to the year.
- The DATE function takes three arguments: year, month, and day. We use the MID function to extract the year, month, and day from the ID number based on their positions. For example, MID(A2,1,2) extracts the first two characters of the ID number, which represent the year.
- The result is a date in the format yyyy/mm/dd.
So, if you enter the ID number
6512160515084 in cell A2 and the formula in cell A3, you should see the date of birth
1965/12/16. If you enter the ID number
0212160515084, you should see the date of birth
2002/12/16.