/// <summary>
 ///
 /// </summary>
 /// <param name="islamic"></param>
 /// <returns></returns>
 public static long IslamicDayToJdn(this IslamicDay islamic)
 {
     return(IslamicDayToJdn(islamic.Year, islamic.Month, islamic.Day));
 }
 /// <summary>
 ///
 /// </summary>
 /// <param name="islamic"></param>
 /// <returns></returns>
 public static PersianDay IslamicDayToPersianDay(this IslamicDay islamic)
 {
     return(JdnToPersianDay(IslamicDayToJdn(islamic)));
 }
 /// <summary>
 ///
 /// </summary>
 /// <param name="islamic"></param>
 /// <returns></returns>
 public static DateTime IslamicDayToGregorian(this IslamicDay islamic)
 {
     return(JdnToGregorianDateTime(IslamicDayToJdn(islamic)));
 }