--- /usr/share/zabbix/include/classes/screens/CScreenGraph.php.orig	2019-03-15 20:21:20.892689484 +0900
+++ /usr/share/zabbix/include/classes/screens/CScreenGraph.php	2019-03-15 20:21:31.759473860 +0900
@@ -143,7 +143,7 @@
 				.'&graph3d='.$graph3d.$this->getProfileUrlParams();
 			$timeControlData['src'] .= ($this->mode == SCREEN_MODE_EDIT)
 				? '&period=3600&stime='.date(TIMESTAMP_FORMAT, time())
-				: '&period='.$this->timeline['period'].'&stime='.$this->timeline['stimeNow'];
+				: '&period='.$this->timeline['period'].'&stime='.$this->timeline['stime'];
 		}
 		else {
 			if ($this->screenitem['dynamic'] == SCREEN_SIMPLE_ITEM || !$this->screenitem['url']) {
@@ -161,7 +161,7 @@
 				.'&height='.$this->screenitem['height'].'&legend='.$legend.$this->getProfileUrlParams();
 			$timeControlData['src'] .= ($this->mode == SCREEN_MODE_EDIT)
 				? '&period=3600&stime='.date(TIMESTAMP_FORMAT, time())
-				: '&period='.$this->timeline['period'].'&stime='.$this->timeline['stimeNow'];
+				: '&period='.$this->timeline['period'].'&stime='.$this->timeline['stime'];
 		}

 		// output