JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//code.jquery.com/ui/1.11.3/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.3/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css">
<input id="date" type="text">

JavaScript

$(function(){
//var year = (new Date).getFullYear();
    $("#date").datepicker(
    
        {
        minDate: new Date((new Date).getFullYear(), 11, 1),
        maxDate: "+1Y +29D " ,
         changeMonth: true,
        changeYear: true ,
        beforeShowDay: function (date) {
        if (date.getDate() == 14 || date.getDate() == 25 ) {
            return [true, ''];
        }
        return [false, ''];
        }
        }

    );
});