https://dominicaninternet.com/index.php?view=rc2player&servicio=5555332&skin=rcplayer0&autoplay=yes

date_default_timezone_set("America/Santo_Domingo");
$now = new Datetime("now");
$begintime = new DateTime('08:30');
$endtime = new DateTime('22:00');


if($now >= $begintime && $now <= $endtime){
    // between times
      $print .= "<iframe src="https://dominicaninternet.com/index.php?view=rc2player&amp;servicio=5555332&amp;skin=rcplayer0&amp;autoplay=yes" width="800px" height="450px" frameborder="0" scrolling="no" allowfullscreen="allowfullscreen"></iframe>";
} else {
    // not between times
    $print .="<iframe src="https://dominicaninternet.com/index.php?view=rc2player&amp;servicio=5555332&amp;skin=rcplayer0&amp;autoplay=yes" width="800px" height="450px" frameborder="0" scrolling="no" allowfullscreen="allowfullscreen"></iframe>";
}