- date_default_timezone_set: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
date_default_timezone_set("America/New_York");
$beginSat=strtotime("-1 week Saturday");
$endSat=strtotime("+0 week Sunday")-1;
echo date("Y-m-d H:i:s", $endSat);