I was supposed to lecture at 10:00, or so the posted schedule told me. So, I went to the lecture hall and waited...and waited...and finally went to the other First Year lecture hall to see everyone in the middle of Immunology lecture.
I checked the syllabus for Biochemistry, and it said November 3, 10:00, but it also said “Th” in front of that. I freaked and thought maybe I’d missed a lecture that was supposed to be yesterday. But the students told me my lecture is really at 11:00 today. Whew.
This teaching stuff can be hazardous to your health.