diff --git a/CHANGELOG.md b/CHANGELOG.md
index 525e811040..6a7705e9a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,7 @@ _This release is scheduled to be released on 2020-07-01._
 
 - The broken modules due to Socket.io change from last release [#1973](https://github.com/MichMich/MagicMirror/issues/1973)
 - Add backward compatibility for old module code in socketclient.js [#1973](https://github.com/MichMich/MagicMirror/issues/1973)
+- Support multiple instances of calendar module with different config [#1109](https://github.com/MichMich/MagicMirror/issues/1109)
 - Fix the use of "maxNumberOfDays" in the module "weatherforecast" [#2018](https://github.com/MichMich/MagicMirror/issues/2018)
 
 ## [2.11.0] - 2020-04-01
diff --git a/modules/default/calendar/calendar.js b/modules/default/calendar/calendar.js
index 9a1cc35097..3658e1e6a7 100755
--- a/modules/default/calendar/calendar.js
+++ b/modules/default/calendar/calendar.js
@@ -128,6 +128,10 @@ Module.register("calendar", {
 
 	// Override socket notification handler.
 	socketNotificationReceived: function (notification, payload) {
+		if (this.identifier !== payload.id) {
+			return;
+		}
+
 		if (notification === "CALENDAR_EVENTS") {
 			if (this.hasCalendarURL(payload.url)) {
 				this.calendarData[payload.url] = payload.events;
@@ -541,6 +545,7 @@ Module.register("calendar", {
 	 */
 	addCalendar: function (url, auth, calendarConfig) {
 		this.sendSocketNotification("ADD_CALENDAR", {
+			id: this.identifier,
 			url: url,
 			excludedEvents: calendarConfig.excludedEvents || this.config.excludedEvents,
 			maximumEntries: calendarConfig.maximumEntries || this.config.maximumEntries,
diff --git a/modules/default/calendar/node_helper.js b/modules/default/calendar/node_helper.js
index 95bb7dca06..6af4b72a1f 100644
--- a/modules/default/calendar/node_helper.js
+++ b/modules/default/calendar/node_helper.js
@@ -23,7 +23,7 @@ module.exports = NodeHelper.create({
 	socketNotificationReceived: function (notification, payload) {
 		if (notification === "ADD_CALENDAR") {
 			//console.log('ADD_CALENDAR: ');
-			this.createFetcher(payload.url, payload.fetchInterval, payload.excludedEvents, payload.maximumEntries, payload.maximumNumberOfDays, payload.auth, payload.broadcastPastEvents);
+			this.createFetcher(payload.url, payload.fetchInterval, payload.excludedEvents, payload.maximumEntries, payload.maximumNumberOfDays, payload.auth, payload.broadcastPastEvents, payload.id);
 		}
 	},
 
@@ -35,16 +35,16 @@ module.exports = NodeHelper.create({
 	 * attribute reloadInterval number - Reload interval in milliseconds.
 	 */
 
-	createFetcher: function (url, fetchInterval, excludedEvents, maximumEntries, maximumNumberOfDays, auth, broadcastPastEvents) {
+	createFetcher: function (url, fetchInterval, excludedEvents, maximumEntries, maximumNumberOfDays, auth, broadcastPastEvents, identifier) {
 		var self = this;
 
 		if (!validUrl.isUri(url)) {
-			self.sendSocketNotification("INCORRECT_URL", { url: url });
+			self.sendSocketNotification("INCORRECT_URL", { id: identifier, url: url });
 			return;
 		}
 
 		var fetcher;
-		if (typeof self.fetchers[url] === "undefined") {
+		if (typeof self.fetchers[identifier + url] === "undefined") {
 			console.log("Create new calendar fetcher for url: " + url + " - Interval: " + fetchInterval);
 			fetcher = new CalendarFetcher(url, fetchInterval, excludedEvents, maximumEntries, maximumNumberOfDays, auth, broadcastPastEvents);
 
@@ -53,6 +53,7 @@ module.exports = NodeHelper.create({
 				//console.log(fetcher.events());
 
 				self.sendSocketNotification("CALENDAR_EVENTS", {
+					id: identifier,
 					url: fetcher.url(),
 					events: fetcher.events()
 				});
@@ -61,15 +62,16 @@ module.exports = NodeHelper.create({
 			fetcher.onError(function (fetcher, error) {
 				console.error("Calendar Error. Could not fetch calendar: ", fetcher.url(), error);
 				self.sendSocketNotification("FETCH_ERROR", {
+					id: identifier,
 					url: fetcher.url(),
 					error: error
 				});
 			});
 
-			self.fetchers[url] = fetcher;
+			self.fetchers[identifier + url] = fetcher;
 		} else {
 			//console.log('Use existing news fetcher for url: ' + url);
-			fetcher = self.fetchers[url];
+			fetcher = self.fetchers[identifier + url];
 			fetcher.broadcastEvents();
 		}