diff --git a/addons/web/static/src/js/views/calendar/calendar_model.js b/addons/web/static/src/js/views/calendar/calendar_model.js
index 78fa6fdaf5e..caa1d26e8c6 100644
--- a/addons/web/static/src/js/views/calendar/calendar_model.js
+++ b/addons/web/static/src/js/views/calendar/calendar_model.js
@@ -768,7 +768,6 @@ return AbstractModel.extend({
 
             // allow to resize in month mode
             r.reset_allday = r.allDay;
-            r.allDay = true;
             r.start = date_start.toDate();
             r.end = date_stop.startOf('day').toDate();
             r.showTime = true;
diff --git a/addons/web/static/src/js/views/calendar/calendar_renderer.js b/addons/web/static/src/js/views/calendar/calendar_renderer.js
index 17ea9da1333..f6ae085e81a 100644
--- a/addons/web/static/src/js/views/calendar/calendar_renderer.js
+++ b/addons/web/static/src/js/views/calendar/calendar_renderer.js
@@ -413,7 +413,7 @@ return AbstractRenderer.extend({
                 if (self.$('.o_cw_popover').length) {
                     self._unselectEvent();
                 } else {
-                    var data = {start: selectionInfo.start, end: selectionInfo.end};
+                    var data = {start: selectionInfo.start, end: selectionInfo.end, allDay: selectionInfo.allDay};
                     if (self.state.context.default_name) {
                         data.title = self.state.context.default_name;
                     }
diff --git a/addons/web/static/tests/views/calendar_tests.js b/addons/web/static/tests/views/calendar_tests.js
index 9f057a1f0dd..b6debe56f58 100644
--- a/addons/web/static/tests/views/calendar_tests.js
+++ b/addons/web/static/tests/views/calendar_tests.js
@@ -3370,6 +3370,35 @@ QUnit.module('Views', {
 
         calendar.destroy();
     });
+
+    QUnit.test('attempt to create multiples events and the same day and check the ordering on month view', async function (assert) {
+        assert.expect(3);
+        /*
+         This test aims to verify that the order of the event in month view is coherent with their start date.
+         */
+        var initDate = new Date(2020, 2, 12, 8, 0, 0); //12 of March
+        this.data.event.records = [
+            {id: 1, name: "Second event", start: "2020-03-12 05:00:00", stop: "2020-03-12 07:00:00", allday: false},
+            {id: 2, name: "First event", start: "2020-03-12 02:00:00", stop: "2020-03-12 03:00:00", allday: false},
+            {id: 3, name: "Third event", start: "2020-03-12 08:00:00", stop: "2020-03-12 09:00:00", allday: false},
+        ];
+        var calendar = await createCalendarView({
+            View: CalendarView,
+            model: 'event',
+            data: this.data,
+            arch: `<calendar date_start="start" date_stop="stop" all_day="allday" mode="month" />`,
+            archs: archs,
+            viewOptions: {
+                initialDate: initDate,
+            },
+        });
+        assert.ok(calendar.$('.o_calendar_view').find('.fc-view-container').length, "should display in the calendar"); // OK
+        // Testing the order of the events: by start date
+        assert.strictEqual(calendar.$('.o_event_title').length, 3, "3 events should be available"); // OK
+        assert.strictEqual(calendar.$('.o_event_title').first().text(), 'First event', "First event should be on top");
+        calendar.destroy();
+    });
+
 });
 
 });