dima85,
если нужны только минуты убрать комментарий, строка 23.
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/humanize-duration/3.20.1/humanize-duration.min.js"></script>
</head>
<body>
<p></p>
<script>
function fn()
{
var m1 = moment('2019-09-22 21:03:53','YYYY-MM-DD HH:mm:ss');
var m2 = moment('2019-09-22 23:33:14','YYYY-MM-DD HH:mm:ss');
document.querySelector("p").innerHTML = humanizeDuration(m2.diff(m1), {language: 'ru'
//,units: ['m'],round: true
})
}
fn()
</script>
</body>
</html>