The DATE-OF-INTEGER Function
The DATE-OF-INTEGER function converts a date in the Gregorian calendar from
integer date form to standard date form (YYYYMMDD). The type of this function
is integer.
General Format

Arguments
- Argument-1 is a positive integer that represents a number of days succeeding
December 31, 1600, in the Gregorian calendar.
Returned Values
- The returned value represents the ISO Standard date equivalent of the integer
specified in argument-1.
- The returned value is in the form (YYYYMMDD) where YYYY represents a year
in the Gregorian calendar; MM represents the month of that year; and DD represents
the day of that month.