fix_date.Rd
A generic function to fix dates in FN2 files. Dates after 2000 are recorded as 19XX.
fix_date(fndt0)
A date field in FN2 files
a formatted date field
fix_date(as.Date("1920-07-10")); fix_date(as.Date("1990-07-10")) #> [1] "2020-07-10" #> [1] "1990-07-10"