JSFiddle - React, Tailwind, and code Playground

HTML

<div id="tabs">
    <ul>
        <li><a href="monday.php">Monday</a></li>
        <li><a href="tuesday.php">Tuesday</a></li>
        <li><a href="wednesday.php">Wednesday</a></li>
        <li><a href="thursday.php">Thursday</a></li>
        <li><a href="friday.php">Friday</a></li>
        <li><a href="saturday.php">Saturday</a></li>
        <li><a href="sunday.php">Sunday</a></li>
    </ul>
</div>

JavaScript

$('#tabs').tabs();
$('#tabs').tabs('select', ((new Date().getDay() || 7) - 1));
$('#tabs .ui-state-active a').text('Today');