To change the week format open "List page: Before display" event of calmonthly view.
Find the following code snippet:
$xt->assign("row00sdname1",$ndays[1]);
$xt->assign("row00sdname2",$ndays[2]);
$xt->assign("row00sdname3",$ndays[3]);
$xt->assign("row00sdname4",$ndays[4]);
$xt->assign("row00sdname5",$ndays[5]);
$xt->assign("row00sdname6",$ndays[6]);
$xt->assign("row00sdname7",$ndays[7]);
Replace it with this one:
$xt->assign("row00sdname1",$ndays[7]);
$xt->assign("row00sdname2",$ndays[1]);
$xt->assign("row00sdname3",$ndays[2]);
$xt->assign("row00sdname4",$ndays[3]);
$xt->assign("row00sdname5",$ndays[4]);
$xt->assign("row00sdname6",$ndays[5]);
$xt->assign("row00sdname7",$ndays[6]);
Also find and delete the following line of code:
$wd=$wd-1;