After extinguishing all efforts, I am reaching out to you to perhaps have a bit of Stata help regarding the dates.

I have a DOB variable with data as:

84.57
85.68
89.53
87.46

The first two numbers are 2 number years, the prefix being 19 (i.e., 1984, 1985, 1989, 1987) and the two numbers after the decimal are the fraction years; for example 1984 + 0.57 years. How can we convert the given numbers to Stata dates? I am assuming we are changing 0.57 to DOY first (no need for leap year adjustment, assuming 365.25 days in a year will do), but I didn't have any success getting the required output for this. Any help will be hugely appreciated.

Thanks much.