>>>Birth = {^1988/2/29}
....
>>Yes, that's correct. But does it mean, that on {^1989/3/28} this person is 1 years 1 months 0 days old?

>No, of course

But "WITH the 2) you uses a pure Y,M,D metric
* check is GOMONTH(GOMONTH(DOB,.Years*12),.Months)+.Days"
it says "Yes"

Regards,
Sergey