How do I seperate the time from the date?

I'm trying to edit the way the events are displayed. I found the code and edited it a bit, but i want the time to be listed below the date. Here is the code, i tried a few things with no luck:

$events_list .= 'id).'" title="'.__('View Event', 'groupcalendar').'" class="event_title">'.stripslashes($event->event_title).'
'.date_i18n($date_format, strtotime($event->event_time)).'