JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://cdnjs.cloudflare.com/ajax/libs/moment.js/2.5.0/moment.min.js"></script>
JavaScript
moment.lang('nl');
var t1 = moment(); // localtime
var t2 = t1.clone().utc(); // UTC
console.log('LOC _d = ' + t1._d);
console.log('UTC _d = ' + t2._d);
console.log('LOC _isUTC = ' + t1._isUTC);
console.log('UTC _isUTC = ' + t2._isUTC);
console.log('LOC valueOf = ' + t1.valueOf());
console.log('UTC valueOf = ' + t2.valueOf());
console.log('LOC end of day valueOf = ' + t1.endOf('day').valueOf());
console.log('UTC end of day valueOf = ' + t2.endOf('day').valueOf());
console.log('LOC end of day _d = ' + t1.endOf('day')._d);
console.log('UTC end of day _d = ' + t2.endOf('day')._d);