set the date with moment code example
Example 1: moment date add
var new_date = moment(startdate, "DD-MM-YYYY").add(5, 'days');
Example 2: moment.set
moment().set('year', 2013);
moment().set('month', 3); // April
moment().set('date', 1);
moment().set('hour', 13);
moment().set('minute', 20);
moment().set('second', 30);
moment().set('millisecond', 123);
moment().set({'year': 2013, 'month': 3});