Before you overwrite fullcalendar.js, note that we have changed a few lines in this file. Running a diff between the original fullcalendar.js and our modified one: denise@denise-DX4860:~/airtime/legacy/public/js/fullcalendar$ diff -u fullcalendar_orig.js fullcalendar.js --- fullcalendar_orig.js 2013-10-08 16:03:35.442375219 -0400 +++ fullcalendar.js 2013-10-08 16:53:02.586338519 -0400 @@ -227,7 +227,7 @@ var absoluteViewElement; var resizeUID = 0; var ignoreWindowResize = 0; - var date = new Date(); + var date = adjustDateToServerDate(new Date(), options["serverTimezoneOffset"]); var events = []; var _dragElement; @@ -2273,7 +2273,7 @@ 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; @@ -3106,7 +3106,7 @@ var headCell; var bodyCell; var date; - var today = clearTime(new Date()); + var today = clearTime(adjustDateToServerDate(new Date(), opt("serverTimezoneOffset"))); for (i=0; i