Converts Gregorian date to absolute R.D. (Rata Die) days.
R.D. 1 is the imaginary date Monday, January 1, 1 (Gregorian).
Only the local-time year, month and day of date are used; hours,
minutes, seconds and milliseconds are ignored.
Dates are interpreted on the proleptic Gregorian calendar, which
applies the Gregorian rules uniformly to every year without the
ten-day discontinuity of the Gregorian Reformation of 1582.
Converts Gregorian date to absolute R.D. (Rata Die) days. R.D. 1 is the imaginary date Monday, January 1, 1 (Gregorian).
Only the local-time year, month and day of
dateare used; hours, minutes, seconds and milliseconds are ignored.Dates are interpreted on the proleptic Gregorian calendar, which applies the Gregorian rules uniformly to every year without the ten-day discontinuity of the Gregorian Reformation of 1582.