Re: Converting oData Date returned by HANA to Javascript String

     var start = that.timeStamp.indexOf('(')+1;

     var end = that.timeStamp.lastIndexOf(')');

     var res = that.timeStamp.substring(start, end);

     oDateFormat =  sap.ui.core.format.DateFormat.getInstance({pattern: "MM/dd/yyyy"})

     oDateFormat.format(new Date(res));   

     console.log(oDateFormat);

This gives me the object, not the formatted date. Maksim's answer does the trick