Version 4.3.6

applications/calendar/Application.php

@@ -145,7 +145,8 @@ class _Application extends \IPS\Application
 
 		foreach ( \IPS\calendar\Event::retrieveEvents( $_today, $endDate, NULL, NULL, FALSE, $member ) as $event )
 		{
-			$document->addItem( $event->title, $event->url(), $event->content, \IPS\DateTime::ts( $event->saved ), $event->id );
+			$next = ( (int) \IPS\Settings::i()->calendar_rss_feed_order === 0 ) ? $event->nextOccurrence( $_today, 'startDate' ) : \IPS\DateTime::ts( $event->saved );
+			$document->addItem( $event->title, $event->url(), $event->content, $next, $event->id );
 		}
 
 		/* @note application/rss+xml is not a registered IANA mime-type so we need to stick with text/xml for RSS */