using moment js add date code example
Example 1: moment js add day
var new_date = moment(startdate, "DD-MM-YYYY").add(5, 'days');
Example 2: 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 3: moment format heure
var time = "15:30:00";
var formatted = moment(time, "HH:mm:ss").format("LT");
console.log(formatted);
//it will return 3:30 PM