week-maker.js

var moment = require('moment');

var startDate = new Date(2016, 8, 7);
var numberOfDaysToAdd = 7;

let nights=39;

const m=moment(startDate);
var daysFromStart;

var meetingNights=[];

for (i=0; i < nights; i++) {

    daysFromStart = (i*numberOfDaysToAdd);

    var t = moment(startDate).add(daysFromStart, 'days').calendar()

    meetingNight={};

    meetingNight.id='2016-2017-' + (i+1);
    meetingNight.night=t;

    meetingNights.push(meetingNight);

}

console.log(meetingNights);