Date picker เป็นภาษาไทยนั้น สามารถทำได้จริง แต่พอเลือกวันที่แล้วค่าที่ใส่ไปใน textbox กลับไม่เปลี่ยนตาม

<?php
	function DateThai($strDate)
	{
		$strYear = date("Y",strtotime($strDate))+543;
		$strMonth= date("n",strtotime($strDate));
		$strDay= date("j",strtotime($strDate));
		$strHour= date("H",strtotime($strDate));
		$strMinute= date("i",strtotime($strDate));
		$strSeconds= date("s",strtotime($strDate));
		$strMonthCut = Array("","ม.ค.","ก.พ.","มี.ค.","เม.ย.","พ.ค.","มิ.ย.","ก.ค.","ส.ค.","ก.ย.","ต.ค.","พ.ย.","ธ.ค.");
		$strMonthThai=$strMonthCut[$strMonth];
		return "$strDay $strMonthThai $strYear, $strHour:$strMinute";
	}

	$strDate = "2008-08-14 13:42:44";
	echo "ThaiCreate.Com Time now : ".DateThai($strDate);
?>

</script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.1/themes/base/jquery-ui.css" type="text/css" media="all" />
 <script src="http://code.jquery.com/jquery-1.9.1.min.js" type="text/javascript"></script>
 <script src="jquery.ui.core.js" type="text/javascript"></script>
 <script src="jquery.ui.datepicker.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
			$("#abc").datepicker({ dateFormat: "yy-mm-dd" });
		});
		</script>

// year selection
		if ( !inst.yearshtml ) {
			inst.yearshtml = "";
			if (secondary || !changeYear) {
				html += "<span class='ui-datepicker-year'>" + (drawYear + 543) + "</span>";
			} else {
				// determine range of years to display
				years = this._get(inst, "yearRange").split(":");
				thisYear = new Date().getFullYear();
				determineYear = function(value) {
					var year = (value.match(/c[+\-].*/) ? drawYear + parseInt(value.substring(1), 10) :
						(value.match(/[+\-].*/) ? thisYear + parseInt(value, 10) :
						parseInt(value, 10)));
					return (isNaN(year) ? thisYear : year);
				};
				year = determineYear(years[0]);
				endYear = Math.max(year, determineYear(years[1] || ""));
				year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
				endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
				inst.yearshtml += "<select class='ui-datepicker-year' data-handler='selectYear' data-event='change'>";
				for (; year <= endYear; year++) {
					inst.yearshtml += "<option value='" + year + "'" +
						(year === drawYear ? " selected='selected'" : "") +
						">" + (year + 543) + "</option>";
				}
				inst.yearshtml += "</select>";

				html += inst.yearshtml;
				inst.yearshtml = null;
			}
		}

		html += this._get(inst, "yearSuffix");
		if (showMonthAfterYear) {
			html += (secondary || !(changeMonth && changeYear) ? "&#xa0;" : "") + monthHtml;
		}
		html += "</div>"; // Close datepicker_header
		return html;
	},