Please Help with incorrect Date Code

I'm posting a snippet of code which prints each date within a week. For example on the day of 10/21/01 it will print the dates 10/21/01, 22, 23, 24, 25, 26, and 27. The problem I am having is on the week of 10/28/01 it will print 10/28 twice. for example 28,28,29,30,31,1,2,3. As far as I can tell every other date seems to work fine except for the week of the 28th, where I get the 28th twice. I'm hoping someone will take a quick look at the code below and maybe have an idea as to why this is occuring or see something I dont see. I greatly appreciate any help or advince. Thanks. <? $yr = "2001"; $mnth = "10"; $dy = "28"; $sunday_stamp = mktime(0,0,0,$mnth,$dy-date("w",mktime(0,0,0,$mnth,$dy,$yr)),$yr); $last_sunday = date("Y-m-d", $sunday_stamp); $next_saturday = date("Y-m-d",mktime(0,0,0,$mnth,$dy+6-date("w",mktime(0,0,0,$mnth,$dy,$yr)), $yr)); $next_day = $last_sunday; $next_stamp = $sunday_stamp; while($next_day <= $next_saturday) { $newsplit = explode("-", $next_day); $date = date("m/d/y", mktime(0,0,0,$newsplit[1],$newsplit[2],$newsplit[0])); $dayoweek = date("l", mktime(0,0,0,$newsplit[1],$newsplit[2],$newsplit[0])); echo "$dayoweek $date<BR>"; $next_stamp = $next_stamp + 86400; // stamp plus # of seconds in a day $next_day = date("Y-m-d",$next_stamp);; } ?>