open automatically calendar

catalog/templates/map.html

@@ -377,6 +377,13 @@
         $('#id_platform').change(function () {
             let dateTreeview = $('li.dateTreeview a');
             dateTreeview.click();
+            setTimeout(() => {
+                $("input[name='start']").datepicker('show');
+            }, 500);
+        });
+
+        $("input[name='start']").change(function() {
+            $("input[name='end']").datepicker('show');
         });
 
         $('#id_end').on('hide.datepicker', function (e) {