Javascript UTC time from Timestamp

Javascript UTC time from Timestamp

function getUTCTimeFromTimeStamp(timestamp) {

 var currentTime = new Date(timestamp),
     unixTime = new Date(
                         currentTime.getUTCFullYear(),
                         currentTime.getUTCMonth(),
                         currentTime.getUTCDate(),
                         currentTime.getUTCHours(),
                         currentTime.getUTCMinutes(),
                         currentTime.getUTCSeconds()
                        );

      return unixTime.getTime();
}