retrieve items between 8 and 17

i am trying to retrieve all items between the time 8-17, i only get one item even if i got 2 items in the list,

 function () {


            var fromTime = new Date(result);
            var fromTimeConverted = fromTime.toJSON().split('T')[0] + "T08:00:00Z";


            var toTime = new Date(result2);
            var toTimeConverted = toTime.toJSON().split('T')[0] + "T17:00:00Z";


            var camlQuery = new SP.CamlQuery();
            camlQuery.set_viewXml('<View><Query><Where><And><Geq><FieldRef Name=\'EventDate\' /><Value IncludeTimeValue=\'TRUE\' Type=\'DateTime\'>'
        + fromTimeConverted + '</Value></Geq><Leq><FieldRef Name=\'EndDate\' /><Value IncludeTimeValue=\'TRUE\' Type=\'DateTime\'>' + toTimeConverted +
        '</Value></Leq></And></Where></Query></View>');


            this.collListItem = list.getItems(camlQuery);
            context.load(collListItem);



                context.load(collListItem, 'Include(EventDate,EndDate)');
                var listItemEnumerator = collListItem.getEnumerator();
                while (listItemEnumerator.moveNext()) {
                    var oListItem = listItemEnumerator.get_current();
                    var listDetails = oListItem.get_item('EventDate') +"      " + oListItem.get_item('EndDate');
                    result = result + listDetails;
                    alert(result);
                        }