JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<button type='button' id="btnDoIt">DO IT!</button>


<div id="slider-container"></div>
<p>
  <label id="rangeLabel" for="amount">Date range:</label>
  <input type="text" id="amount" style="width: 300px;border: 0; color: #f6931f; font-weight: bold;" />
</p>

CSS

.ui-helper-hidden {
	display: none;
}

.ui-helper-hidden-accessible {
	border: 0;
	clip: rect(0 0 0 0);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute;
	width: 1px;
}

.ui-helper-reset {
	margin: 0;
	padding: 0;
	border: 0;
	outline: 0;
	line-height: 1.3;
	text-decoration: none;
	font-size: 100%;
	list-style: none;
}

.ui-helper-clearfix:before,
.ui-helper-clearfix:after {
	content: "";
	display: table;
	border-collapse: collapse;
}

.ui-helper-clearfix:after {
	clear: both;
}

.ui-helper-zfix {
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	position: absolute;
	opacity: 0;
	filter: Alpha(Opacity=0); /* support: IE8 */
}

.ui-front {
	z-index: 100;
}


/* Interaction Cues
----------------------------------*/
.ui-state-disabled {
	cursor: default !important;
	pointer-events: none;
}


/* Icons
----------------------------------*/
.ui-icon {
	display: inline-block;
	vertical-align: middle;
	margin-top: -.25em;
	position: relative;
	text-indent: -99999px;
	overflow: hidden;
	background-repeat: no-repeat;
}

.ui-widget-icon-block {
	left: 50%;
	margin-left: -8px;
	display: block;
}

/* Misc visuals
----------------------------------*/

/* Overlays */
.ui-widget-overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

.ui-accordion .ui-accordion-header {
	display: block;
	cursor: pointer;
	position: relative;
	margin: 2px 0 0 0;
	padding: .5em .5em .5em .7em;
	font-size: 100%;
}

.ui-accordion .ui-accordion-content {
	padding: 1em 2.2em;
	border-top: 0;
	overflow: auto;
}

.ui-autocomplete {
	position: absolute;
	top: 0;
	left: 0;
	cursor: default;
}

.ui-button {
	padding: .4em 1em;
	display: inline-block;
	position: relative;
	line-height: normal;
	margin-right: .1em;
	cursor: pointer;
	vertical-align: middle;
	text-align: center;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	/* Support: IE <= 11 */
	overflow:...

JavaScript

$(document).on('click', '#btnDoIt', function () {
		var dates = '["1999-01-05T00:00:00","2001-04-01T00:00:00","2003-03-21T00:00:00","2006-12-01T00:00:00","2007-08-31T00:00:00","2007-10-24T00:00:00","2007-12-14T00:00:00","2007-12-23T00:00:00","2008-02-18T00:00:00","2008-03-26T00:00:00","2008-06-23T00:00:00","2008-10-09T00:00:00","2009-02-01T00:00:00","2009-07-14T00:00:00","2009-07-16T00:00:00","2009-08-18T00:00:00","2010-03-16T00:00:00","2011-03-11T00:00:00","2011-09-28T00:00:00","2011-11-11T00:00:00","2011-12-23T00:00:00","2012-03-09T00:00:00","2012-08-22T00:00:00","2012-09-17T00:00:00","2013-05-23T00:00:00","2014-01-16T00:00:00","2014-03-24T00:00:00","2014-11-26T00:00:00","2015-06-17T00:00:00","2015-07-08T00:00:00","2015-09-03T00:00:00","2015-11-27T00:00:00","2016-08-17T00:00:00","2016-09-01T00:00:00","2016-11-14T00:00:00","2017-01-26T00:00:00","2019-08-19T00:00:00"]';
    loadRange(dates);

	});

function loadRange (dates) {

		dates = $.parseJSON(dates);

    'use strict';

		var convertedArray = [];

		for (var index = 0; index < dates.length; ++index) {
			var converted;
			if (index === 0) {
				converted = (new Date(dates[index]).getTime() - 86400000) / 1000;
			} else {
				converted = (new Date(dates[index]).getTime() + 86400000) / 1000;
			}
			convertedArray.push(converted);
		}

		var min = new Date(convertedArray[0] * 1000).toISOString().slice(0, 10);
		var max = new Date(convertedArray[convertedArray.length - 1] * 1000).toISOString().slice(0, 10);

		var minDate = min;
		var maxDate = max;
		
		$("#slider-container").slider({
			range: true,
			min: convertedArray[0],
			max: convertedArray[convertedArray.length - 1],
			step: 864,
			values: [convertedArray[0], convertedArray[convertedArray.length - 1]],
			slide: function (event, ui) {
				var min = new Date(ui.values[0] * 1000).toISOString().slice(0, 10);
				var max = new Date(ui.values[ui.values.length - 1] * 1000).toISOString().slice(0, 10);
				$("#amount").val(min + " - " + max);
				minDate...