An other way... #include <Date.au3>
$epoch = 1444077951
$aCall = DllCall("msvcrt.dll", "str:cdecl", "ctime", "int*", $epoch)
$tmp = StringSplit($aCall[0], " ")
For $i = 1 to 12
If $tmp[2] = _DateToMonth($i, $DMW_SHORTNAME) Then $tmp[2] = $i
Next
$date = StringFormat("%4i/%02i/%02i %8s", $tmp[5], $tmp[2], $tmp[3], $tmp[4])
msgbox(0,"", $date)