<?php

echo gmdate('Y-m-d H:i:s', nfaToTs('A70171480')).PHP_EOL;
echo gmdate('Y-m-d H:i:s', nfaToTs('C3AE09035')).PHP_EOL;
echo gmdate('Y-m-d H:i:s', nfaToTs('A70EA199D')).PHP_EOL;


function nfaToTs($nfa) { 
	$nfadata=hexdec(substr($nfa,0,-5));
	$nfahora=hexdec(substr($nfa,-5));
	return ($nfadata-25569) * 86400 + ($nfahora - 7) / 11.574;
}