UPD: proper setup of datetimewidget in export form.

dav_events/forms/events.py

@@ -78,6 +78,8 @@ class EventListExportForm(forms.Form):
                                                  options={
                                                      # 'format': 'dd.mm.yyyy',
                                                      # 'weekStart': 1,
+                                                     'startView': 3,
+                                                     'clearBtn': True,
                                                      'pickerPosition': 'bottom-left',
                                                  },
                                                  bootstrap_version=3))