julianDayNumber property
Converts a date of the Jalali calendar to the Julian Day number.
non-null
Implementation
@override
int get julianDayNumber {
final r = _JalaliCalculation.calculate(year);
return Gregorian(r.gy!, 3, r.march!).julianDayNumber +
(month - 1) * 31 -
(month ~/ 7) * (month - 7) +
day -
1;
}