JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://raw.github.com/timrwood/moment/1.4.0/moment.min.js"></script>
<script src="https://raw.github.com/gist/1771023/fbaab28b61caa78e59e6ada11428f6dd2e03b90b/moment.calendarWithoutTime.js"></script>

JavaScript

function log(str) {
    $('body').append('<p>' + str + '</p>');
}

log(moment().calendar());
log(moment().calendar(true));