diff --git a/modules/default/calendar/calendarfetcherutils.js b/modules/default/calendar/calendarfetcherutils.js
index c1cc07ce9f..e0971f5759 100644
--- a/modules/default/calendar/calendarfetcherutils.js
+++ b/modules/default/calendar/calendarfetcherutils.js
@@ -66,11 +66,6 @@ const CalendarFetcherUtils = {
 		const searchFromDate = pastLocalMoment.clone().subtract(Math.max(durationInMs, oneDayInMs), "milliseconds").toDate();
 		const searchToDate = futureLocalMoment.clone().add(1, "days").toDate();
 
-		// For all-day events, extend "until" to end of day to include the final occurrence
-		if (isFullDayEvent && rule.options?.until) {
-			rule.options.until = moment(rule.options.until).endOf("day").toDate();
-		}
-
 		const dates = rule.between(searchFromDate, searchToDate, true) || [];
 
 		// Convert dates to moments in the event's timezone.
@@ -313,7 +308,12 @@ const CalendarFetcherUtils = {
 			let recurringEventStartMoment = startMoment.clone().tz(CalendarFetcherUtils.getLocalTimezone());
 			let recurringEventEndMoment = recurringEventStartMoment.clone().add(durationMs, "ms");
 
-			const dateKey = recurringEventStartMoment.tz("UTC").format("YYYY-MM-DD");
+			// For full-day events, use local date components to match node-ical's getDateKey behavior
+			// For timed events, use UTC to match ISO string slice
+			const isFullDay = CalendarFetcherUtils.isFullDayEvent(event);
+			const dateKey = isFullDay
+				? recurringEventStartMoment.format("YYYY-MM-DD")
+				: recurringEventStartMoment.tz("UTC").format("YYYY-MM-DD");
 
 			// Check for overrides
 			if (curEvent.recurrences !== undefined) {
diff --git a/package-lock.json b/package-lock.json
index 65e7b9c9d0..89e3e3ca7a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
 				"ipaddr.js": "^2.3.0",
 				"moment": "^2.30.1",
 				"moment-timezone": "^0.6.0",
-				"node-ical": "^0.23.0",
+				"node-ical": "^0.23.1",
 				"nunjucks": "^3.2.4",
 				"pm2": "^6.0.14",
 				"socket.io": "^4.8.3",
@@ -950,9 +950,9 @@
 			}
 		},
 		"node_modules/@csstools/css-syntax-patches-for-csstree": {
-			"version": "1.0.24",
-			"resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.0.24.tgz",
-			"integrity": "sha512-T0pSTcd9eYEHV+llVPSkZU7URdVGu87BpSvozMwRoLJYXmLXvEHgYfv0yDsQH9+DIdLzkJCOJBABqWWnwTGPvg==",
+			"version": "1.0.25",
+			"resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.0.25.tgz",
+			"integrity": "sha512-g0Kw9W3vjx5BEBAF8c5Fm2NcB/Fs8jJXh85aXqwEXiL+tqtOut07TWgyaGzAAfTM+gKckrrncyeGEZPcaRgm2Q==",
 			"dev": true,
 			"funding": [
 				{
@@ -9426,9 +9426,9 @@
 			}
 		},
 		"node_modules/node-ical": {
-			"version": "0.23.0",
-			"resolved": "https://registry.npmjs.org/node-ical/-/node-ical-0.23.0.tgz",
-			"integrity": "sha512-1XMNdOVH1j1JgHdCrIzJ3MPYhPn0LZidrF65tjzGGJYgps1id8+bNd8qs8SuQMjxoKM5VPpfT5D8ro5y1MsBkw==",
+			"version": "0.23.1",
+			"resolved": "https://registry.npmjs.org/node-ical/-/node-ical-0.23.1.tgz",
+			"integrity": "sha512-4+FON2u++r7vU9VfTCris9hgxS5darN4P7aQZOJkzDazXLRS7cExb0G5OWO3CzRs8gHd5um1fdSMF0e45f7xAg==",
 			"license": "Apache-2.0",
 			"dependencies": {
 				"@js-temporal/polyfill": "^0.5.1",
@@ -12070,9 +12070,9 @@
 			"license": "MIT"
 		},
 		"node_modules/systeminformation": {
-			"version": "5.30.2",
-			"resolved": "https://registry.npmjs.org/systeminformation/-/systeminformation-5.30.2.tgz",
-			"integrity": "sha512-Rrt5oFTWluUVuPlbtn3o9ja+nvjdF3Um4DG0KxqfYvpzcx7Q9plZBTjJiJy9mAouua4+OI7IUGBaG9Zyt9NgxA==",
+			"version": "5.30.3",
+			"resolved": "https://registry.npmjs.org/systeminformation/-/systeminformation-5.30.3.tgz",
+			"integrity": "sha512-NgHJUpA+y7j4asLQa9jgBt+Eb2piyQIXQ+YjOyd2K0cHNwbNJ6I06F5afOqOiaCuV/wrEyGrb0olg4aFLlJD+A==",
 			"license": "MIT",
 			"os": [
 				"darwin",
diff --git a/package.json b/package.json
index 3d592675e6..e9c9f4a9f8 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
 		"ipaddr.js": "^2.3.0",
 		"moment": "^2.30.1",
 		"moment-timezone": "^0.6.0",
-		"node-ical": "^0.23.0",
+		"node-ical": "^0.23.1",
 		"nunjucks": "^3.2.4",
 		"pm2": "^6.0.14",
 		"socket.io": "^4.8.3",