After updating Joomla Events Manager to version 4.3.4, the Jubilee module stopped displaying events for a given day and instead displayed all events I had entered. My Joomla was previously version 4.4, and I updated it to 5.4, but the same problem persists.
Please, apply this commit in \components\com_jem\models\eventslist.php file of JEM 4.3.4:
github.com/jemproject/JEM-Project/commit/bfe27248b1e0cda95a845c640abc3b2badb159eb
Tell me if the issue goes away.