source/php/EventArchive.php
public function filterEventDate($the_time, $d, $post)
    {
        if ($post->post_type != $this->eventPostType || !isset($post->start_date) || !isset($post->end_date)) {
            return $the_time;
        }

        if (get_option('time_format') == $d) {
            return '';
        }

        return App::formatEventDate($post->start_date, $post->end_date);
    }
public function filterEventDate($the_time, $d, $post)
    {
        if ($post->post_type != $this->eventPostType || !isset($post->start_date) || !isset($post->end_date)) {
            return $the_time;
        }

        if (get_option('time_format') == $d) {
            return '';
        }

        return App::formatEventDate($post->start_date, $post->end_date);
    }
Show event start & end date instead of publish date when calling "the_time()" within an event archive