diff --git a/calendar/js/et2_widget_daycol.js b/calendar/js/et2_widget_daycol.js
index 59f7d80997..2c123a3195 100644
--- a/calendar/js/et2_widget_daycol.js
+++ b/calendar/js/et2_widget_daycol.js
@@ -885,13 +885,13 @@ var et2_calendar_daycol = (function(){ "use strict"; return et2_valueWidget.exte
 			{
 				event.end = new Date(event.end);
 			}
-			event['start_m'] = event.start.getUTCHours() * 60 + event.start.getUTCMinutes();
+			event['start_m'] = (event.start.valueOf()/1000 - day_start) / 60
 			if (event['start_m'] < 0)
 			{
 				event['start_m'] = 0;
 				event['multiday'] = true;
 			}
-			event['end_m'] = event.end.getUTCHours() * 60 + event.end.getUTCMinutes();
+			event['end_m'] = (event.end.valueOf()/1000 - day_start) / 60;
 			if (event['end_m'] >= 24*60)
 			{
 				event['end_m'] = 24*60-1;
diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index e18e7e2616..fd5b87837f 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -653,7 +653,6 @@ var et2_calendar_event = (function(){ "use strict"; return et2_valueWidget.exten
 			var duration = event.multiday ?
 				(event.end - event.start) / 60000 :
 				(event.end_m - event.start_m);
-			if (event.end_m === 24*60-1) ++duration;
 			duration = Math.floor(duration/60) + this.egw().lang('h')+(duration%60 ? duration%60 : '');
 
 			timespan = jQuery.datepicker.formatTime(