diff --git a/assets/js/backend_calendar_default_view.js b/assets/js/backend_calendar_default_view.js
index 3401b12e..0fb63d2a 100755
--- a/assets/js/backend_calendar_default_view.js
+++ b/assets/js/backend_calendar_default_view.js
@@ -1343,8 +1343,8 @@ window.BackendCalendarDefaultView = window.BackendCalendarDefaultView || {};
                 }
 
                 // Preselect time
-                $('#start-datetime').datepicker('setDate', new Date(start.format('YYYY-MM-DD HH:mm:ss')));
-                $('#end-datetime').datepicker('setDate', new Date(end.format('YYYY-MM-DD HH:mm:ss')));
+                $('#start-datetime').datepicker('setDate', new Date(start.format('YYYY/MM/DD HH:mm:ss')));
+                $('#end-datetime').datepicker('setDate', new Date(end.format('YYYY/MM/DD HH:mm:ss')));
 
                 return false;
             },
diff --git a/assets/js/backend_calendar_table_view.js b/assets/js/backend_calendar_table_view.js
index ac916746..c9ebf96a 100755
--- a/assets/js/backend_calendar_table_view.js
+++ b/assets/js/backend_calendar_table_view.js
@@ -697,8 +697,8 @@ window.BackendCalendarTableView = window.BackendCalendarTableView || {};
                 $('#select-provider').val(provider.id).trigger('change');
 
                 // Preselect time
-                $('#start-datetime').datepicker('setDate', new Date(start.format('YYYY-MM-DD HH:mm:ss')));
-                $('#end-datetime').datepicker('setDate', new Date(end.format('YYYY-MM-DD HH:mm:ss')));
+                $('#start-datetime').datepicker('setDate', new Date(start.format('YYY/MM/DD HH:mm:ss')));
+                $('#end-datetime').datepicker('setDate', new Date(end.format('YYYY/MM/DD HH:mm:ss')));
 
                 return false;
             },