How to retrieve items from Camlquery

how could i retrieve items from and daterange 2014-12-07 08:00 to 17:00 2014-12-08 08:00 to 17:00 2014-12-09 08:00 to 17:00

With my query right now i have from 2014-12-07 08:00 to 2014-09-17:00 And that also adds hours from others time between the nights, but i dont wont so,

var fromTime; var toTime; var listItemCustom; var listItemtoDate; var fromTimeConverted; var toTimeConverted;

function checkFreebookingdateTime() {

getListCalender = document.getElementById('CalenderListDrop').value;
spHostUrl = decodeURIComponent(getQueryStringParameter('SPHostUrl'));
context = new SP.ClientContext.get_current();
parentContext = new SP.AppContextSite(context, spHostUrl);
web = parentContext.get_web();
list = web.get_lists().getByTitle(getListCalender);
context.load(list);

                var fromDate08 = "T08:00:00Z";
                var toDate17 = "T17:00:00Z";
                listItemCustom = document.getElementById('datepicker').value;
                var listItemFromTime = document.getElementById('timepicker').value;
                listItemtoDate = document.getElementById('datepickerto').value;
                var listItemToTime = document.getElementById('timepickerTo').value;
                var result = listItemCustom + "T" + listItemFromTime + ":00" + "Z";
                var result2 = listItemtoDate + "T" + listItemToTime + ":00" + "Z";
                fromTime = new Date(result);
                var numberToAddbefore = -1;
                fromTime.setDate(fromTime.getDate() + numberToAddbefore);


                fromTimeConverted = fromTime.toJSON().split('T')[0] + fromDate08;
                toTime = new Date(result2);
                var numberToAddafter = 1;
                toTime.setDate(toTime.getDate() + numberToAddafter);


                toTimeConverted = toTime.toJSON().split('T')[0] + toDate17;

                var camlQuery = new SP.CamlQuery('<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>');
                camlQuery.set_viewXml();


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


                context.executeQueryAsync(onQuerySucceeded, onQueryFailed);

}