System.Globalization.HebrewCalendar.IsLeapDay C# (CSharp) Method

        public override bool IsLeapDay(int year, int month, int day, int era) {
            if (IsLeapMonth(year, month, era)) {
                // Every day in a leap month is a leap day.
                CheckHebrewDayValue(year, month, day, era);
                return (true);
            } else if (IsLeapYear(year, Calendar.CurrentEra)) {
                // There is an additional day in the 6th month in the leap year (the extra day is the 30th day in the 6th month),
                // so we should return true for 6/30 if that's in a leap year.
                if (month == 6 && day == 30) {
                    return (true);
                }
            }
            CheckHebrewDayValue(year, month, day, era);
            return (false);
        }