Create a GEDCOM Gregorian Date object
Arguments
- year
The year given as an integer (greater than 0).
- month
The month of the year given as an integer between 1 and 12.
- day
The day of the month given as an integer between 1 and 31.
- bce
Whether the date is Before the Common Era. This is FALSE by default,
but if TRUE, only the year should be given.
Value
An S7 object representing a GEDCOM Gregorian Date.