A calendar date whose day may be fractional (12.5 = noon on the 12th). Dates before 1582-10-15 are interpreted in the Julian calendar, matching historical usage and Meeus's conventions.
1–31, may be fractional
1–12
A calendar date whose day may be fractional (12.5 = noon on the 12th). Dates before 1582-10-15 are interpreted in the Julian calendar, matching historical usage and Meeus's conventions.