Before you overwrite fullcalendar.js, note that we have changed one line of this file. Running a diff between the original fullcalendar.js and our modified one: $diff -u fullcalendar_original.js fullcalendar.js --- fullcalendar_original.js 2011-04-09 17:13:15.000000000 -0400 +++ fullcalendar.js 2011-08-19 11:58:49.672894583 -0400 @@ -2275,7 +2275,7 @@ function updateCells(firstTime) { var dowDirty = firstTime || rowCnt == 1; // could the cells' day-of-weeks need updating? var month = t.start.getMonth(); - var today = clearTime(new Date()); + var today = clearTime(adjustDateToServerDate(new Date(), opt("serverTimezoneOffset"))); var cell; var date; var row; adjustDateToServerDate() function is defined in "js/airtime/schedule/full-calendar-functions.js" Please make this change before updating!!!