Is Caturday?

function.caturday.php

<?php

/* accepts date as a unix timestamp, a string, or empty for today. */

function is_caturday($date=null)
{
	if (is_numeric($date) && $date !== null) {
		$time = $date;
	} elseif($date !== null) {
		$time = strtotime($date);
	} else {
		$time = time();
	}

	if(date('D',$time) == 'Sat') {
		return true;
	} else {
		return false;
	}
}

/* Example */

echo is_caturday()?"Its Caturday!":"Its not Caturday...boo";

?>