Several of the general students are rotating weekends at a urology clinic. We're divided into groups and subgroups and I'm group D, subgroup I.
The schedule reads like this, and yes, it is unnecessarily confusing:
Group D will rotate through Blah Blah Urology the fourth Saturday (subgroup I) and Sunday (subgroup II) of each month September through March, with the exception of November when Group D, subgroups I and II will rotate the fourth weekend together on Saturday and Sunday, and the last weekend when Group D-I and D-II will rotate Saturday only, followed by Group A-1 and A-II on Sunday only. This will correct the vacation schedule in September so that all groups rotate evenly.
Well, I never bothered to actually look at a physical calendar for November, otherwise I would have realized that the fourth weekend IS the last weekend and next weekend is the first weekend of December. And to top it all off, I got it stuck in my head that this was the last week and thought I only had to rotate today, which I had already made arrangements to switch with another girl for whom I had taken another day earlier in the semester. However, that girl followed the "last weekend" schedule change and didn't show today thinking she only had to be there tomorrow.
So, the gist is I missed today AND I have to be there tomorrow AND I'm probably going to get a load of crap from my program director on Monday because we're really not supposed to switch these schedules to begin with. As you can see, even the instructor who makes the schedule has a hard time being coherent, so when we go making changes it really throws a wrench.
Thank god for leftover pie.