diff --git a/addons/spreadsheet/static/src/list/list_data_source.js b/addons/spreadsheet/static/src/list/list_data_source.js
index affb42030a7..ce3c8472b77 100644
--- a/addons/spreadsheet/static/src/list/list_data_source.js
+++ b/addons/spreadsheet/static/src/list/list_data_source.js
@@ -5,6 +5,12 @@ import { LoadingDataError } from "@spreadsheet/o_spreadsheet/errors";
 import { _t } from "@web/core/l10n/translation";
 import { sprintf } from "@web/core/utils/strings";
 import { orderByToString } from "@web/views/utils";
+import {
+    formatDateTime,
+    deserializeDateTime,
+    formatDate,
+    deserializeDate,
+} from "@web/core/l10n/dates";
 
 import * as spreadsheet from "@odoo/o-spreadsheet";
 
@@ -152,8 +158,9 @@ export default class ListDataSource extends OdooViewsDataSource {
             case "boolean":
                 return record[fieldName] ? "TRUE" : "FALSE";
             case "date":
+                return record[fieldName] ? toNumber(this._formatDate(record[fieldName])) : "";
             case "datetime":
-                return record[fieldName] ? toNumber(record[fieldName]) : "";
+                return record[fieldName] ? toNumber(this._formatDateTime(record[fieldName])) : "";
             default:
                 return record[fieldName] || "";
         }
@@ -163,6 +170,16 @@ export default class ListDataSource extends OdooViewsDataSource {
     // Private
     //--------------------------------------------------------------------------
 
+    _formatDateTime(dateValue) {
+        const date = deserializeDateTime(dateValue);
+        return formatDateTime(date);
+    }
+
+    _formatDate(dateValue) {
+        const date = deserializeDate(dateValue);
+        return formatDate(date);
+    }
+
     /**
      * Ask the parent data source to force a reload of this data source in the
      * next clock cycle. It's necessary when this.limit was updated and new
diff --git a/addons/spreadsheet/static/tests/utils/model.js b/addons/spreadsheet/static/tests/utils/model.js
index 68858e9d62f..4253c3299e4 100644
--- a/addons/spreadsheet/static/tests/utils/model.js
+++ b/addons/spreadsheet/static/tests/utils/model.js
@@ -2,6 +2,7 @@
 
 import { ormService } from "@web/core/orm_service";
 import { registry } from "@web/core/registry";
+import { makeFakeLocalizationService } from "@web/../tests/helpers/mock_services";
 import { makeTestEnv } from "@web/../tests/helpers/mock_env";
 import { nextTick } from "@web/../tests/helpers/utils";
 
@@ -31,6 +32,7 @@ export function setupDataSourceEvaluation(model) {
  */
 export async function createModelWithDataSource(params = {}) {
     registry.category("services").add("orm", ormService, { force: true });
+    registry.category("services").add("localization", makeFakeLocalizationService(), { force: true });
     const env = await makeTestEnv({
         serverData: params.serverData || getBasicServerData(),
         mockRPC: params.mockRPC,