JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/ui/1.11.0/jquery-ui.js"></script>
<p>Date: <input type="text" id="datepicker" /></p>

JavaScript

$(function() {
    var appLocalTimezone = -10;
    $( "#datepicker" ).datepicker({
        showButtonPanel: true
    });
    
    function getAppLocalTimezone() {
        return calcTime(appLocalTimezone);
    }
    
    // courtesy of http://stackoverflow.com/a/10088053/648350
    // function to calculate local time in differnt timezone
    function calcTime(offset) {
        // create Date object for current location
        d = new Date();
    
        // convert to msec
        // add local time zone offset
        // get UTC time in msec
        utc = d.getTime() + (d.getTimezoneOffset() * 60000);
    
        // create new Date object for different city
        // using supplied offset
        nd = new Date(utc + (3600000*offset));
        return nd;
    }
    
    // courtesy of http://stackoverflow.com/a/7613795/648350
    $.datepicker._gotoToday = function(id) {
        var target = $(id);
        var inst = this._getInst(target[0]);
        if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
                inst.selectedDay = inst.currentDay;
                inst.drawMonth = inst.selectedMonth = inst.currentMonth;
                inst.drawYear = inst.selectedYear = inst.currentYear;
        }
        else {
                var date = getAppLocalTimezone();
                inst.selectedDay = date.getDate();
                inst.drawMonth = inst.selectedMonth = date.getMonth();
                inst.drawYear = inst.selectedYear = date.getFullYear();
                this._setDateDatepicker(target, date);
                this._selectDate(id, this._getDateDatepicker(target));
        }
        this._notifyChange(inst);
        this._adjustDate(target);
    }
    
    // from jqueryui 1.11.0 source 
    $.datepicker._generateHTML = function(inst) {
		var maxDraw, prevText, prev, nextText, next, currentText, gotoDate,
			controls, buttonPanel, firstDay, showWeek, dayNames, dayNamesMin,
			monthNames, monthNamesShort, beforeShowDay,...