diff --git a/addons/bus/static/tests/helpers/mock_python_environment.js b/addons/bus/static/tests/helpers/mock_python_environment.js
index a4a22456089..b462daf1df6 100644
--- a/addons/bus/static/tests/helpers/mock_python_environment.js
+++ b/addons/bus/static/tests/helpers/mock_python_environment.js
@@ -6,6 +6,8 @@ import { registry } from "@web/core/registry";
 import { registerCleanup } from "@web/../tests/helpers/cleanup";
 import { makeMockServer } from "@web/../tests/helpers/mock_server";
 import core from "@web/legacy/js/services/core";
+import { serializeDateTime, serializeDate } from "@web/core/l10n/dates";
+const { DateTime } = luxon;
 
 const modelDefinitionsPromise = new Promise((resolve) => {
     QUnit.begin(() => resolve(getModelDefinitions()));
@@ -56,8 +58,8 @@ async function getModelDefinitions() {
             if (["date", "datetime"].includes(field.type) && !field.default) {
                 const defaultFieldValue =
                     field.type === "date"
-                        ? () => moment.utc().format("YYYY-MM-DD")
-                        : () => moment.utc().format("YYYY-MM-DD HH:mm:ss");
+                        ? () => serializeDate(DateTime.utc())
+                        : () => serializeDateTime(DateTime.utc());
                 field.default = defaultFieldValue;
             } else if (fname === "active" && !("default" in field)) {
                 // records are active by default.
diff --git a/addons/calendar/static/src/activity/activity_menu_patch.js b/addons/calendar/static/src/activity/activity_menu_patch.js
index 5979974b2ac..3a7b27c8e2b 100644
--- a/addons/calendar/static/src/activity/activity_menu_patch.js
+++ b/addons/calendar/static/src/activity/activity_menu_patch.js
@@ -2,8 +2,8 @@
 
 import { ActivityMenu } from "@mail/core/web/activity_menu";
 import { patch } from "@web/core/utils/patch";
-import fieldUtils from "@web/legacy/js/fields/field_utils";
-import time from "@web/legacy/js/core/time";
+import { deserializeDateTime, formatDateTime } from "@web/core/l10n/dates";
+import { localization } from "@web/core/l10n/localization";
 
 patch(ActivityMenu.prototype, "calendar", {
     async fetchSystrayActivities() {
@@ -12,11 +12,8 @@ patch(ActivityMenu.prototype, "calendar", {
             if (group.type === "meeting") {
                 for (const meeting of group.meetings) {
                     if (meeting.start) {
-                        meeting.formattedStart = moment(
-                            fieldUtils.parse.datetime(meeting.start, false, { isUTC: true })
-                        )
-                            .local()
-                            .format(time.getLangTimeFormat());
+                        const date = deserializeDateTime(meeting.start);
+                        meeting.formattedStart = formatDateTime(date, { format: localization.timeFormat });
                     }
                 }
             }
diff --git a/addons/mail/static/tests/helpers/mock_server/models/discuss_channel.js b/addons/mail/static/tests/helpers/mock_server/models/discuss_channel.js
index c1f5e04ca9e..6b8fa0b1478 100644
--- a/addons/mail/static/tests/helpers/mock_server/models/discuss_channel.js
+++ b/addons/mail/static/tests/helpers/mock_server/models/discuss_channel.js
@@ -7,6 +7,7 @@ import { datetime_to_str } from "@web/legacy/js/core/time";
 import { assignDefined } from "@mail/utils/common/misc";
 import { formatDate } from "@web/core/l10n/dates";
 import { Command } from "@mail/../tests/helpers/command";
+const { DateTime } = luxon;
 
 patch(MockServer.prototype, "mail/models/discuss_channel", {
     async _performRPC(route, args) {
@@ -953,7 +954,7 @@ patch(MockServer.prototype, "mail/models/discuss_channel", {
      */
     _mockDiscussChannelWriteImage128(id) {
         this.pyEnv["discuss.channel"].write([id], {
-            avatarCacheKey: moment.utc().format("YYYYMMDDHHmmss"),
+            avatarCacheKey: DateTime.utc().toFormat("yyyyMMddHHmmss"),
         });
         const channel = this.pyEnv["discuss.channel"].searchRead([["id", "=", id]])[0];
         this.pyEnv["bus.bus"]._sendone(channel, "mail.record/insert", {
diff --git a/addons/mail/static/tests/helpers/mock_server/models/mail_activity.js b/addons/mail/static/tests/helpers/mock_server/models/mail_activity.js
index 901526c04ba..6442629d3c3 100644
--- a/addons/mail/static/tests/helpers/mock_server/models/mail_activity.js
+++ b/addons/mail/static/tests/helpers/mock_server/models/mail_activity.js
@@ -3,7 +3,7 @@
 import { sortBy } from "@web/core/utils/arrays";
 import { patch } from "@web/core/utils/patch";
 import { MockServer } from "@web/../tests/helpers/mock_server";
-import { serializeDate } from "@web/core/l10n/dates";
+import { serializeDate, deserializeDate } from "@web/core/l10n/dates";
 
 const { DateTime} = luxon;
 
@@ -140,7 +140,7 @@ patch(MockServer.prototype, "mail/models/mail_activity", {
             group.activity_type_id = group.activity_type_id[0];
             let minDate;
             activites.forEach(function (activity) {
-                if (!minDate || moment(activity.date_deadline) < moment(minDate)) {
+                if (!minDate || deserializeDate(activity.date_deadline) < deserializeDate(minDate)) {
                     minDate = activity.date_deadline;
                 }
             });
@@ -149,7 +149,7 @@ patch(MockServer.prototype, "mail/models/mail_activity", {
             let state;
             if (group.date_deadline === serializeDate(DateTime.now())) {
                 state = "today";
-            } else if (moment(group.date_deadline) > moment()) {
+            } else if (deserializeDate(group.date_deadline) > DateTime.now()) {
                 state = "planned";
             } else {
                 state = "overdue";
@@ -183,7 +183,7 @@ patch(MockServer.prototype, "mail/models/mail_activity", {
             }),
             activity_res_ids: sortBy(
                 records.map((x) => x.id),
-                (id) => moment(resIdToDeadline[id])
+                (id) => deserializeDate(resIdToDeadline[id])
             ),
             grouped_activities: groupedActivities,
         };
diff --git a/addons/point_of_sale/static/src/app/screens/ticket_screen/ticket_screen.js b/addons/point_of_sale/static/src/app/screens/ticket_screen/ticket_screen.js
index fdc322a8b28..3931ff3e80d 100644
--- a/addons/point_of_sale/static/src/app/screens/ticket_screen/ticket_screen.js
+++ b/addons/point_of_sale/static/src/app/screens/ticket_screen/ticket_screen.js
@@ -3,7 +3,7 @@
 import { Order } from "@point_of_sale/app/store/models";
 import { registry } from "@web/core/registry";
 import { useService } from "@web/core/utils/hooks";
-import { deserializeDateTime } from "@web/core/l10n/dates";
+import { deserializeDateTime, deserializeDate } from "@web/core/l10n/dates";
 import { parseFloat } from "@web/views/fields/parsers";
 import { _lt } from "@web/core/l10n/translation";
 
@@ -333,7 +333,7 @@ export class TicketScreen extends Component {
         return this._getOrderList().filter(predicate);
     }
     getDate(order) {
-        return moment(order.validation_date).format("YYYY-MM-DD hh:mm A");
+        return deserializeDate(order.validation_date).toFormat("yyyy-MM-dd HH:mm a");
     }
     getTotal(order) {
         return this.env.utils.formatCurrency(order.get_total_with_tax());
@@ -580,7 +580,7 @@ export class TicketScreen extends Component {
                 modelField: "pos_reference",
             },
             DATE: {
-                repr: (order) => moment(order.creation_date).format("YYYY-MM-DD hh:mm A"),
+                repr: (order) => deserializeDate(order.creation_date).toFormat("yyyy-MM-dd HH:mm a"),
                 displayName: this.env._t("Date"),
                 modelField: "date_order",
             },
diff --git a/addons/point_of_sale/static/src/app/store/models.js b/addons/point_of_sale/static/src/app/store/models.js
index 8d9a4fbf183..ee6dbde4d62 100644
--- a/addons/point_of_sale/static/src/app/store/models.js
+++ b/addons/point_of_sale/static/src/app/store/models.js
@@ -4,7 +4,7 @@ import { formatFloat } from "@web/views/fields/formatters";
 import { uuidv4 } from "@point_of_sale/utils";
 // FIXME POSREF - unify use of native parseFloat and web's parseFloat. We probably don't need the native version.
 import { parseFloat as oParseFloat } from "@web/views/fields/parsers";
-import { formatDate, formatDateTime, serializeDateTime } from "@web/core/l10n/dates";
+import { formatDate, formatDateTime, serializeDateTime, deserializeDate } from "@web/core/l10n/dates";
 import {
     roundDecimals as round_di,
     roundPrecision as round_pr,
@@ -227,8 +227,8 @@ export class Product extends PosModel {
         const categories = this.parent_category_ids.concat(this.categ.id);
         return (
             (!item.categ_id || categories.includes(item.categ_id[0])) &&
-            (!item.date_start || moment.utc(item.date_start).isSameOrBefore(date)) &&
-            (!item.date_end || moment.utc(item.date_end).isSameOrAfter(date))
+            (!item.date_start || deserializeDate(item.date_start) <= date) &&
+            (!item.date_end || deserializeDate(item.date_end) >= date)
         );
     }
     // Port of _get_product_price on product.pricelist.
@@ -242,7 +242,7 @@ export class Product extends PosModel {
     // and were automatically sorted based on their _order by the
     // ORM. After that they are added in this order to the pricelists.
     get_price(pricelist, quantity, price_extra = 0, recurring = false) {
-        var date = moment();
+        const date = DateTime.now();
 
         // In case of nested pricelists, it is necessary that all pricelists are made available in
         // the POS. Display a basic alert to the user in the case where there is a pricelist item
diff --git a/addons/pos_sale/static/src/app/order_management_screen/sale_order_row/sale_order_row.js b/addons/pos_sale/static/src/app/order_management_screen/sale_order_row/sale_order_row.js
index 2ea1e314515..5dc991bd83a 100644
--- a/addons/pos_sale/static/src/app/order_management_screen/sale_order_row/sale_order_row.js
+++ b/addons/pos_sale/static/src/app/order_management_screen/sale_order_row/sale_order_row.js
@@ -1,6 +1,7 @@
 /** @odoo-module */
 import { Component, useState } from "@odoo/owl";
 import { useService } from "@web/core/utils/hooks";
+import { deserializeDateTime } from "@web/core/l10n/dates";
 
 /**
  * @props {models.Order} order
@@ -29,7 +30,7 @@ export class SaleOrderRow extends Component {
         return this.order.name;
     }
     get date() {
-        return moment(this.order.date_order).format("YYYY-MM-DD hh:mm A");
+        return deserializeDateTime(this.order.date_order).toFormat("yyyy-MM-dd HH:mm a");
     }
     get partner() {
         const partner = this.order.partner_id;
diff --git a/addons/project/static/src/js/portal_rating.js b/addons/project/static/src/js/portal_rating.js
index 9c65101cd2d..6cc7ff0b1a6 100644
--- a/addons/project/static/src/js/portal_rating.js
+++ b/addons/project/static/src/js/portal_rating.js
@@ -1,7 +1,7 @@
 /** @odoo-module **/
 
-import time from '@web/legacy/js/core/time';
 import publicWidget from '@web/legacy/js/public/public_widget';
+import { parseDate } from '@web/core/l10n/dates';
 
 publicWidget.registry.ProjectRatingImage = publicWidget.Widget.extend({
     selector: '.o_portal_project_rating .o_rating_image',
@@ -18,8 +18,8 @@ publicWidget.registry.ProjectRatingImage = publicWidget.Widget.extend({
                 var $elem = $(this);
                 var id = $elem.data('id');
                 var ratingDate = $elem.data('rating-date');
-                var baseDate = time.auto_str_to_date(ratingDate);
-                var duration = moment(baseDate).fromNow();
+                var baseDate = parseDate(ratingDate);
+                var duration = baseDate.toRelative();
                 var $rating = $('#rating_' + id);
                 $rating.find('.rating_timeduration').text(duration);
                 return $rating.html();
diff --git a/addons/test_mail/static/tests/activity_tests.js b/addons/test_mail/static/tests/activity_tests.js
index 464ceb4b915..28ac785567f 100644
--- a/addons/test_mail/static/tests/activity_tests.js
+++ b/addons/test_mail/static/tests/activity_tests.js
@@ -89,7 +89,7 @@ QUnit.module("test_mail", {}, function () {
     });
 
     var activityDateFormat = function (date) {
-        return date.toLocaleDateString(moment().locale(), { day: "numeric", month: "short" });
+        return DateTime.now().toLocaleString({ day: "numeric", month: "short" });
     };
 
     QUnit.test("activity view: simple activity rendering", async function (assert) {
diff --git a/addons/web/static/src/core/l10n/dates.js b/addons/web/static/src/core/l10n/dates.js
index 09567e9ff74..374172c3e48 100644
--- a/addons/web/static/src/core/l10n/dates.js
+++ b/addons/web/static/src/core/l10n/dates.js
@@ -297,6 +297,7 @@ export function formatDateTime(value, options = {}) {
 /**
  * Formats the given DateTime to the server date format.
  * @param {DateTime} value
+ * @returns {string} 
  */
 export function serializeDate(value) {
     if (!dateCache.has(value)) {
@@ -308,6 +309,7 @@ export function serializeDate(value) {
 /**
  * Formats the given DateTime to the server datetime format.
  * @param {DateTime} value
+ * @returns {string} 
  */
 export function serializeDateTime(value) {
     if (!dateTimeCache.has(value)) {
diff --git a/addons/web_editor/static/src/js/editor/snippets.options.js b/addons/web_editor/static/src/js/editor/snippets.options.js
index 26c19a6367c..ba963f6a70f 100644
--- a/addons/web_editor/static/src/js/editor/snippets.options.js
+++ b/addons/web_editor/static/src/js/editor/snippets.options.js
@@ -49,6 +49,7 @@ var _t = core._t;
 const _lt = core._lt;
 const preserveCursor = OdooEditorLib.preserveCursor;
 const descendants = OdooEditorLib.descendants;
+const { DateTime } = luxon;
 
 /**
  * @param {HTMLElement} el
@@ -1849,7 +1850,7 @@ const DatetimePickerUserValueWidget = InputUserValueWidget.extend({
      */
     init: function () {
         this._super(...arguments);
-        this._value = moment().unix().toString();
+        this._value = DateTime.now().toUnixInteger().toString();
         this.__libInput = 0;
     },
     /**
diff --git a/addons/website_crm_partner_assign/static/src/js/crm_partner_assign.js b/addons/website_crm_partner_assign/static/src/js/crm_partner_assign.js
index 084c3a44fda..333c303bc56 100644
--- a/addons/website_crm_partner_assign/static/src/js/crm_partner_assign.js
+++ b/addons/website_crm_partner_assign/static/src/js/crm_partner_assign.js
@@ -4,6 +4,8 @@ import { sprintf } from "@web/core/utils/strings";
 import {_t} from "@web/legacy/js/services/core";
 import publicWidget from "@web/legacy/js/public/public_widget";
 import time from "@web/legacy/js/core/time";
+import { parseDate, formatDate } from "@web/core/l10n/dates";
+const { DateTime } = luxon;
 
 publicWidget.registry.crmPartnerAssign = publicWidget.Widget.extend({
     selector: '#wrapwrap:has(.interested_partner_assign_form, .desinterested_partner_assign_form, .opp-stage-button, .new_opp_form)',
@@ -252,9 +254,10 @@ publicWidget.registry.crmPartnerAssign = publicWidget.Widget.extend({
             $('.edit_opp_form .activity_summary').val($selected.attr('activity_summary'));
         }
         if ($selected.attr('delay_count')) {
-            var now = moment();
-            var date = now.add(parseInt($selected.attr('delay_count')), $selected.attr('delay_unit'));
-            $('.edit_opp_form .activity_date_deadline').val(date.format(time.getLangDateFormat()));
+            const value = +$selected.attr('delay_count');
+            const unit = $selected.attr('delay_unit');
+            const date = DateTime.now().plus({ [unit]: value});
+            $('.edit_opp_form .activity_date_deadline').val( formatDate(date) );
         }
     },
     /**
@@ -277,9 +280,9 @@ publicWidget.registry.crmPartnerAssign = publicWidget.Widget.extend({
 
     _parse_date: function (value) {
         console.log(value);
-        var date = moment(value, time.getLangDateFormat(), true);
-        if (date.isValid() && date.year() >= 1900) {
-            return time.date_to_str(date.toDate());
+        var date = parseDate(value);
+        if (date.isValid && date.year >= 1900) {
+            return formatDate(date);
         }
         else {
             return false;