Events arbitrarily not showing up in calendar

I have maybe 10 events listed and they all show up on my calendar. Except for one event, this Friday. What is strange is that I did a complete reinstall of the events module, cleaned out the databases - everything, and an event scheduled for Friday just won't show up.

I do have a block also that lists upcoming events, and it shows the event as normal. It's just not in the calendar. Weird.