//Used momentJS library

function getTimeStops(end){
var roundedUp, startTime, endTime, timeStops;
roundedUp = Math.ceil(moment().utc().minute() / 30) * 30;
startTime = moment().utc().set({minute:roundedUp});
endTime = moment(end, 'HH:mm');

if( endTime.isBefore(startTime) ){
endTime.add(1, 'day');
}

timeStops = [];

while(startTime <= endTime){
timeStops.push(new moment(startTime).format('HH:mm'));
startTime.add(15, 'minutes');
}
return timeStops;
}

var timeStops = getTimeStops('02:00');
console.log('timeStops ', timeStops);