let min_date = moment().subtract(18, 'years');

var startdate = moment();

startdate = startdate.subtract(1, "days");

startdate = startdate.format("DD-MM-YYYY");

​

May be:

dateTo = moment().format('YYYY-MM-DD');

dateFrom = moment().subtract(7,'d').format('YYYY-MM-DD');

moment().subtract(1, 'months').format('MMM YYYY');

var date1 = moment('2016-10-08 10:29:23');

var date2 = moment('2016-10-08 11:06:55');

var diff = date2.diff(date1);

moment().subtract(7, 'days');

startdate.subtract(1, "days");