/// <summary>
/// Conversion d'une date Julien en temps universel
/// </summary>
public DateTime ToUniversalTime(JulianDay jDay)
{
int year = 0, month = 0, day = 0, hour = 0, minute = 0; double second = 0;
Sweph.swe_jdet_to_utc(jDay.Value, ToCalendar(jDay.Calendar), ref year, ref month, ref day, ref hour, ref minute, ref second);
return(new DateTime(year, month, day, hour, minute, (int)second, DateTimeKind.Utc));
}
