moment js change time code example
Example 1: moment js get french time 20:00:00
moment().format(); // "2014-09-08T08:02:17-05:00" (ISO 8601, no fractional seconds)
moment().format("dddd, MMMM Do YYYY, h:mm:ss a"); // "Sunday, February 14th 2010, 3:25:50 pm"
moment().format("ddd, hA"); // "Sun, 3PM"
moment('gibberish').format('YYYY MM DD'); // "Invalid date"
Example 2: moment diff
var a = moment([2007, 0, 29]);
var b = moment([2007, 0, 28]);
a.diff(b, 'days') // 1