public override bool IsLeapDay(int year, int month, int day, int era)
{
CheckMonthRange(month);
// Year/Era range check is done in IsLeapYear().
if (IsLeapYear(year, era)) {
CheckDayRange(year, month, day);
return (month == 2 && day == 29);
}
CheckDayRange(year, month, day);
return (false);
}