From 970d9cff0a53a5ad74338a63a04f62d01f4c1352 Mon Sep 17 00:00:00 2001
From: Battseren Badral <bbattseren88@gmail.com>
Date: Thu, 2 Apr 2026 14:31:29 +0200
Subject: [PATCH] Datepicker: add Mongolian localization

---
 demos/datepicker/localization.html |  3 ++-
 tests/unit/datepicker/options.js   |  9 +++++--
 ui/i18n/datepicker-mn.js           | 40 ++++++++++++++++++++++++++++++
 3 files changed, 49 insertions(+), 3 deletions(-)
 create mode 100644 ui/i18n/datepicker-mn.js

diff --git a/demos/datepicker/localization.html b/demos/datepicker/localization.html
index 5e9a6cfaf5..ed4e6c5e58 100644
--- a/demos/datepicker/localization.html
+++ b/demos/datepicker/localization.html
@@ -7,7 +7,7 @@
 	<link rel="stylesheet" href="../../themes/base/all.css">
 	<link rel="stylesheet" href="../demos.css">
 	<script src="../../external/requirejs/require.js"></script>
-	<script src="../bootstrap.js" data-modules="i18n/datepicker-ar i18n/datepicker-fr i18n/datepicker-he i18n/datepicker-zh-TW">
+	<script src="../bootstrap.js" data-modules="i18n/datepicker-ar i18n/datepicker-fr i18n/datepicker-he i18n/datepicker-mn i18n/datepicker-zh-TW">
 		$( "#datepicker" ).datepicker( $.datepicker.regional[ "fr" ] );
 		$( "#locale" ).on( "change", function() {
 			$( "#datepicker" ).datepicker( "option",
@@ -24,6 +24,7 @@
 		<option value="">English</option>
 		<option value="fr" selected="selected">French (Fran&ccedil;ais)</option>
 		<option value="he">Hebrew (&#8235;(&#1506;&#1489;&#1512;&#1497;&#1514;</option>
+		<option value="mn">Mongolian (&#1052;&#1086;&#1085;&#1075;&#1086;&#1083;)</option>
 	</select></p>
 
 <div class="demo-description">
diff --git a/tests/unit/datepicker/options.js b/tests/unit/datepicker/options.js
index 3055bc1997..aebbdcd862 100644
--- a/tests/unit/datepicker/options.js
+++ b/tests/unit/datepicker/options.js
@@ -5,6 +5,7 @@ define( [
 	"ui/widgets/datepicker",
 	"ui/i18n/datepicker-fr",
 	"ui/i18n/datepicker-he",
+	"ui/i18n/datepicker-mn",
 	"ui/i18n/datepicker-zh-CN"
 ], function( QUnit, $, testHelper ) {
 "use strict";
@@ -949,9 +950,9 @@ QUnit.test( "iso8601Week", function( assert ) {
 } );
 
 QUnit.test( "parseDate", function( assert ) {
-	assert.expect( 26 );
+	assert.expect( 27 );
 	testHelper.init( "#inp" );
-	var currentYear, gmtDate, fr, settings, zh;
+	var currentYear, gmtDate, fr, mn, settings, zh;
 	assert.ok( $.datepicker.parseDate( "d m y", "" ) == null, "Parse date empty" );
 	testHelper.equalsDate( assert, $.datepicker.parseDate( "d m y", "3 2 01" ),
 		new Date( 2001, 2 - 1, 3 ), "Parse date d m y" );
@@ -1011,6 +1012,10 @@ QUnit.test( "parseDate", function( assert ) {
 	zh = $.datepicker.regional[ "zh-CN" ];
 	testHelper.equalsDate( assert, $.datepicker.parseDate( "yy M d", "2011 十一月 22", zh ),
 		new Date( 2011, 11 - 1, 22 ), "Parse date yy M d with zh-CN" );
+
+	mn = $.datepicker.regional.mn;
+	testHelper.equalsDate( assert, $.datepicker.parseDate( "yy MM d", "2011 Арваннэгдүгээр сар 22", mn ),
+		new Date( 2011, 11 - 1, 22 ), "Parse date yy MM d with mn" );
 } );
 
 QUnit.test( "parseDateErrors", function( assert ) {
diff --git a/ui/i18n/datepicker-mn.js b/ui/i18n/datepicker-mn.js
new file mode 100644
index 0000000000..733129047b
--- /dev/null
+++ b/ui/i18n/datepicker-mn.js
@@ -0,0 +1,40 @@
+/* Mongolian (UTF-8) initialisation for the jQuery UI date picker plugin. */
+/* Written by jQuery UI contributors. */
+( function( factory ) {
+	"use strict";
+
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [ "../widgets/datepicker" ], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery.datepicker );
+	}
+} )( function( datepicker ) {
+"use strict";
+
+datepicker.regional.mn = {
+	closeText: "Хаах",
+	prevText: "Өмнөх",
+	nextText: "Дараах",
+	currentText: "Өнөөдөр",
+	monthNames: [ "Нэгдүгээр сар", "Хоёрдугаар сар", "Гуравдугаар сар", "Дөрөвдүгээр сар", "Тавдугаар сар", "Зургаадугаар сар",
+	"Долоодугаар сар", "Наймдугаар сар", "Есдүгээр сар", "Аравдугаар сар", "Арваннэгдүгээр сар", "Арванхоёрдугаар сар" ],
+	monthNamesShort: [ "1-р сар", "2-р сар", "3-р сар", "4-р сар", "5-р сар", "6-р сар",
+	"7-р сар", "8-р сар", "9-р сар", "10-р сар", "11-р сар", "12-р сар" ],
+	dayNames: [ "ням", "даваа", "мягмар", "лхагва", "пүрэв", "баасан", "бямба" ],
+	dayNamesShort: [ "Ня", "Да", "Мя", "Лх", "Пү", "Ба", "Бя" ],
+	dayNamesMin: [ "Ня", "Да", "Мя", "Лх", "Пү", "Ба", "Бя" ],
+	weekHeader: "7х",
+	dateFormat: "yy-mm-dd",
+	firstDay: 1,
+	isRTL: false,
+	showMonthAfterYear: false,
+	yearSuffix: "" };
+datepicker.setDefaults( datepicker.regional.mn );
+
+return datepicker.regional.mn;
+
+} );