private function StrartLun($prevDongChi, $offset)
{
$lunperiod = 29.530588853;
$lun = (int) (($prevDongChi - 2451550.09765) / $lunperiod);
$newMoonAfterDongChi = MoonPhase::moonphasebylunation($lun, 0);
$newMoonAfterDongChi2 = MoonPhase::moonphasebylunation($lun + 1, 0);
$dongChi = LunarYear::JDtoDate($prevDongChi + $offset);
$newMoon = LunarYear::JDtoDate($newMoonAfterDongChi + $offset);
$newMoon2 = LunarYear::JDtoDate($newMoonAfterDongChi2 + $offset);
if ($newMoon < $dongChi & $newMoon2 >= $dongChi) {
$lun++;
}
if ($newMoon2 < $dongChi) {
$lun += 2;
}
return $lun;
}
public static function NewMoonLun($lun)
{
$JDE = MoonPhase::moonphasebylunation($lun - 953, 0);
$event_date = MoonPhase::JDtoDate($JDE);
return $event_date;
}
