diff --git a/src/EventManager.js b/src/EventManager.js
index 4d159ab..81ffb8d 100644
--- a/src/EventManager.js
+++ b/src/EventManager.js
@@ -130,10 +130,10 @@ function EventManager(options, _sources) {
 				var startParam = firstDefined(source.startParam, options.startParam);
 				var endParam = firstDefined(source.endParam, options.endParam);
 				if (startParam) {
-					data[startParam] = Math.round(+rangeStart / 1000);
+					data[startParam] = (options.startEndDateOnly) ? (rangeStart.getYear()+'-'+(rangeStart.getMonth()+1)+'-'+rangeStart.getDate()) : Math.round(+rangeStart / 1000);
 				}
 				if (endParam) {
-					data[endParam] = Math.round(+rangeEnd / 1000);
+					data[endParam] = (options.startEndDateOnly) ? (rangeEnd.getYear()+'-'+(rangeEnd.getMonth()+1)+'-'+rangeEnd.getDate()) : Math.round(+rangeEnd / 1000);
 				}
 				pushLoading();
 				$.ajax($.extend({}, ajaxDefaults, source, {
diff --git a/src/defaults.js b/src/defaults.js
index 9cb9982..7c44f00 100644
--- a/src/defaults.js
+++ b/src/defaults.js
@@ -19,10 +19,12 @@ var defaults = {
 	allDayDefault: true,
 	ignoreTimezone: true,
 	
+
 	// event ajax
 	lazyFetching: true,
 	startParam: 'start',
 	endParam: 'end',
+        startEndDateOnly: false,
 	
 	// time formats
 	titleFormat: {