diff --git a/airtime_mvc/application/common/DateHelper.php b/airtime_mvc/application/common/DateHelper.php
index cf1d8291b..d1764c28a 100644
--- a/airtime_mvc/application/common/DateHelper.php
+++ b/airtime_mvc/application/common/DateHelper.php
@@ -45,6 +45,22 @@ class Application_Common_DateHelper
         return gmdate("H:i:s", $this->_dateTime);
     }
     
+    public static function getUserTimezoneOffset()
+    {
+    	$userTimezone = new DateTimeZone(Application_Model_Preference::GetUserTimezone());
+    	$now = new DateTime("now", $userTimezone);
+    	
+    	return $now->format("Z");
+    }
+    
+    public static function getStationTimezoneOffset()
+    {
+    	$stationTimezone = new DateTimeZone(Application_Model_Preference::GetDefaultTimezone());
+    	$now = new DateTime("now", $stationTimezone);
+    	
+    	return $now->format("Z");
+    }
+    
     /**
      *
      * @return DateTime - YYYY-MM-DD 00:00 in station timezone of today
@@ -374,6 +390,21 @@ class Application_Common_DateHelper
     	return $d->format($format);
     }
     
+    /*
+     * @param $datetime string Y-m-d H:i:s in user timezone
+    *
+    * @return string Y-m-d H:i:s in UTC timezone
+    */
+    public static function UserTimezoneStringToUTCString($datetime, $format="Y-m-d H:i:s") {
+    	$userTimezone = new DateTimeZone(Application_Model_Preference::GetUserTimezone());
+    	$utcTimezone = new DateTimeZone("UTC");
+    	 
+    	$d = new DateTime($datetime, $userTimezone);
+    	$d->setTimezone($utcTimezone);
+    
+    	return $d->format($format);
+    }
+    
     /**
      * Convert the columns given in the array $columnsToConvert in the
      * database result $rows to local timezone.
diff --git a/airtime_mvc/application/controllers/ApiController.php b/airtime_mvc/application/controllers/ApiController.php
index a15e0081e..da671cd80 100644
--- a/airtime_mvc/application/controllers/ApiController.php
+++ b/airtime_mvc/application/controllers/ApiController.php
@@ -68,33 +68,6 @@ class ApiController extends Zend_Controller_Action
             "version" => Application_Model_Preference::GetAirtimeVersion()));
     }
 
-    /**
-     * Sets up and send init values used in the Calendar.
-     * This is only being used by schedule.js at the moment.
-     */
-    public function calendarInitAction()
-    {
-        if (is_null(Zend_Auth::getInstance()->getStorage()->read())) {
-            header('HTTP/1.0 401 Unauthorized');
-            print _('You are not allowed to access this resource.');
-
-            return;
-        }
-        
-        $tz = new DateTimeZone(Application_Model_Preference::GetUserTimezone());
-        $now = new DateTime("now", $tz);
-
-        $this->view->calendarInit = array(
-            "timestamp" => time(),
-            "timezoneOffset" => $now->format("Z"),
-            "timeScale" => Application_Model_Preference::GetCalendarTimeScale(),
-            "timeInterval" => Application_Model_Preference::GetCalendarTimeInterval(),
-            "weekStartDay" => Application_Model_Preference::GetWeekStartDay()
-        );
-
-        $this->_helper->json->sendJson(array());
-    }
-
     /**
      * Allows remote client to download requested media file.
      *
diff --git a/airtime_mvc/application/controllers/ScheduleController.php b/airtime_mvc/application/controllers/ScheduleController.php
index 2f1d62e0e..9737d6231 100644
--- a/airtime_mvc/application/controllers/ScheduleController.php
+++ b/airtime_mvc/application/controllers/ScheduleController.php
@@ -51,7 +51,7 @@ class ScheduleController extends Zend_Controller_Action
             "var calendarPref = {};\n".
             "calendarPref.weekStart = ".Application_Model_Preference::GetWeekStartDay().";\n".
             "calendarPref.timestamp = ".time().";\n".
-            "calendarPref.timezoneOffset = ".date("Z").";\n".
+            "calendarPref.timezoneOffset = ".Application_Common_DateHelper::getUserTimezoneOffset().";\n".
             "calendarPref.timeScale = '".Application_Model_Preference::GetCalendarTimeScale()."';\n".
             "calendarPref.timeInterval = ".Application_Model_Preference::GetCalendarTimeInterval().";\n".
             "calendarPref.weekStartDay = ".Application_Model_Preference::GetWeekStartDay().";\n".
@@ -61,7 +61,8 @@ class ScheduleController extends Zend_Controller_Action
         $this->view->headScript()->appendFile($baseUrl.'js/contextmenu/jquery.contextMenu.js?'.$CC_CONFIG['airtime_version'],'text/javascript');
 
         //full-calendar-functions.js requires this variable, so that datePicker widget can be offset to server time instead of client time
-        $this->view->headScript()->appendScript("var timezoneOffset = ".date("Z")."; //in seconds");
+        //this should be as a default, however with our new drop down timezone changing for shows, we should reset this offset then??
+        $this->view->headScript()->appendScript("var timezoneOffset = ".Application_Common_DateHelper::getStationTimezoneOffset()."; //in seconds");
         //set offset to ensure it loads last
         $this->view->headScript()->offsetSetFile(90, $baseUrl.'js/airtime/schedule/full-calendar-functions.js?'.$CC_CONFIG['airtime_version'],'text/javascript');
 
diff --git a/airtime_mvc/application/forms/AddShowRepeats.php b/airtime_mvc/application/forms/AddShowRepeats.php
index 6045c3d78..a8179ccd8 100644
--- a/airtime_mvc/application/forms/AddShowRepeats.php
+++ b/airtime_mvc/application/forms/AddShowRepeats.php
@@ -83,8 +83,8 @@ class Application_Form_AddShowRepeats extends Zend_Form_SubForm
     }
 
     public function isValid($formData) {
-        if (parent::isValid($formData)) {
-             return $this->checkReliantFields($formData);
+        if (parent::isValid($formData)) {            
+            return $this->checkReliantFields($formData);
         } else {
             return false;
         }
@@ -95,15 +95,18 @@ class Application_Form_AddShowRepeats extends Zend_Form_SubForm
         if (!$formData['add_show_no_end']) {
             $start_timestamp = $formData['add_show_start_date'];
             $end_timestamp = $formData['add_show_end_date'];
-
-            $start_epoch = strtotime($start_timestamp);
-            $end_epoch = strtotime($end_timestamp);
-
-            if ($end_epoch < $start_epoch) {
+            $showTimeZone = new DateTimeZone($formData['add_show_timezone']);
+            
+            //We're assuming all data is valid at this point (timezone, etc.).
+            
+            $startDate = new DateTime($start_timestamp, $showTimeZone);
+            $endDate = new DateTime($end_timestamp, $showTimeZone);
+            
+            if ($endDate < $startDate) {
                 $this->getElement('add_show_end_date')->setErrors(array(_('End date must be after start date')));
-
                 return false;
             }
+            return true;
         }
 
         if (!isset($formData['add_show_day_check'])) {
diff --git a/airtime_mvc/application/models/Datatables.php b/airtime_mvc/application/models/Datatables.php
index d39a939fa..f74d0fecc 100644
--- a/airtime_mvc/application/models/Datatables.php
+++ b/airtime_mvc/application/models/Datatables.php
@@ -11,9 +11,11 @@ class Application_Model_Datatables
             $isRange = false;
             if (strstr($term, '~')) {
                 $info = explode('~', $term);
-                if ($dbname == 'utime' || $dbname == 'mtime') {
-                    $input1 = isset($info[0])?Application_Common_DateHelper::ConvertToUtcDateTimeString($info[0]):null;
-                    $input2 = isset($info[1])?Application_Common_DateHelper::ConvertToUtcDateTimeString($info[1]):null;
+                if ($dbname == 'utime' || $dbname == 'mtime' || $dbname == 'lptime') {
+                	
+                    $input1 = ($info[0] != "") ? Application_Common_DateHelper::UserTimezoneStringToUTCString($info[0]) : null;
+                    $input2 = ($info[1] != "") ? Application_Common_DateHelper::UserTimezoneStringToUTCString($info[1]) : null;
+                    
                 } else if($dbname == 'bit_rate' || $dbname == 'sample_rate') {
                     $input1 = isset($info[0])?doubleval($info[0]) * 1000:null;
                     $input2 = isset($info[1])?doubleval($info[1]) * 1000:null;
@@ -50,6 +52,8 @@ class Application_Model_Datatables
                 }
             }
         }
+        
+        Logging::info($where);
         return $where;
     }
     /*