THIS IS WHAT I DID ON MY SYSTEM.
var startTime=("08:00:00").split(":");var endTime=("16:00:00").split(":");var HoursInMinutes=((parseInt(endTime[0])*60)+parseInt(endTime[1]))-((parseInt(startTime[0])*60)+parseInt(startTime[1]));console.log(HoursInMinutes/60);