They don’t provide a lot of useful custom fields currently, but the event date is one of them.
However, when I use it as a dynamic field—which looks like {cf_em_start_date}—it prints like this on the page:
1713644949
(Which is the linux timestamp for the date and time of the event.)
I tried using, e.g., {cf_em_start_date:Y}, but this had no effect.
Just thinking it would be good if we could force any such custom field data into a formatted date (or at least it would attempt to do so) by using the datetime filters?