[FIX] test date format

static/src/js/operation_graph.js

@@ -55,7 +55,10 @@ odoo.define('enercoop_cdc.operation_graph', function (require) {
                             type: 'time',
                             time: {
                               // Luxon format string
-                              unit: unit
+                              unit: unit,
+                              displayFormats: {
+                                'day': 'MM/DD/YYYY'
+                              }
                             },
                             title: {
                               display: true,