var timelineItemCount = getRandomInt(0, 19);

var dateArray = new Array();

    for(i=0;i<timelineItemCount;i++)

    {

        var today = new Date();

        var randomDates = randomDate(today, new Date(today.getFullYear(), today.getMonth(), today.getDate()+7));

        dateArray.push(randomDates);

    }   

    dateArray.sort(function compare(a, b) {

        return (a < b) - (a > b);

    });

    console.log(dateArray);

​

function getRandomInt(min, max) {

    return Math.floor(Math.random() * (max - min + 1)) + min;

}

​

function randomDate(start, end) {

    return new Date(start.getTime() + Math.random() * (end.getTime() - start.getTime()));

}