I am guessing no one in your country will ever live to be more than 100?
Here is a formula that seems to work for those less than 100 years old...

=DATE(1900+100*(IF(LEFT(A1,2)<=RIGHT(YEAR(NOW()),2 ),IF(--MID(A1,3,2)<=MONTH(NOW()),IF(--MID(A1,5,2)<=DAY(NOW()),1,0),0),0))+LEFT(A1,2),MID (A1,3,2),MID(A1,5,2))

Rick


"Hennie Neuhoff" wrote in message
...
In our country all citizens have a unique [13digit] identity number, the
first 6 digits being date of bitrh. I've tried to convert these 6 digits
to
date of birth, without
any luck. The main problem being the year of birth forms the first 2
digits,
ie a person born on 10 February 1952 IDnumber would be 520210[plus 7
digits] .
Any help would be appreciated
HJN