[Zope-CMF] Plone skin Calendar oddities

[Carlson, Christopher W.]

I'm experiementing with the Plone CMF skin, and have run into the following
odd behavior:

If I create an event to take place on 3/24/2002 from 1:30PM to 5:30PM, it
shows up properly on the calendar.  An event taking place on 3/31 doesn't
show up, however.  A multi-day event *ending* on 3/31 shows up properly.

Does anybody know what might cause this behavior?

--- Chris