Yesterday afternoon I tried to sync my phone with my Lotus Notes calendar, but the sync operation failed with an error message about an invalid calendar entry.

I went to my calendar and took a closer look at the offending entry, for an area meeting I’d accepted without really looking at it. The problem was evident:

I felt justified in deleting the entry from my calendar, because clearly I can’t go. Even if I knew how to attend a meeting of -109 years in duration, I’m afraid I have a conflict: specifically, it conflicts with everything I’ve ever done in my entire life.