Answers for "moment js output plus 6 hours"

momentjs date and time string add minutes

moment(date, "DD-MM-YYYY hh:mm:ss")
                        .add(10, 'minutes')
                        .format('DD/MM/YYYY hh:mm:ss');

moment js add day

var new_date = moment(startdate, "DD-MM-YYYY").add(5, 'days');

moment set hours

const date = moment()

date.set({ 
  hour:0,
  minute:0,
  second:0,
  millisecond:0
})