Use UTC timestamps for CAT control

application/controllers/Api.php

@@ -476,6 +476,10 @@ class API extends CI_Controller {
 		   die();
 		}
 
+		if(!isset($obj['timestamp'])) {
+			$obj['timestamp'] = gmdate('Y/m/d H:i:s');
+		}
+
 		// Store Result to Database
 		$this->cat->update($obj);
 

application/controllers/Radio.php

@@ -120,8 +120,9 @@
 				}
 
 				// Calculate how old the data is in minutes 
-				$datetime1 = new DateTime(); // Today's Date/Time
-				$datetime2 = new DateTime($row->newtime);
+				$timezone = new DateTimeZone("UTC");
+				$datetime1 = new DateTime("now", $timezone);
+				$datetime2 = new DateTime($row->timestamp, $timezone);
 				$interval = $datetime1->diff($datetime2);
 
 				$minutes = $interval->days * 24 * 60;

application/models/Cat.php

@@ -102,7 +102,7 @@
 
 		function radio_status($id) {
 
-			return $this->db->query('SELECT *, CONVERT_TZ(`timestamp`, @@session.time_zone, \'+00:00\' ) as newtime FROM `cat` WHERE id = '.$id.' ');
+			return $this->db->query('SELECT * FROM `cat` WHERE id = '.$id.' ');
 
 		}