Each summer this happens to me, probably because I don't have kids so I don't think of summer vacation as being two months long.
Each summer, the commute bus changes its timetable. Not only are there fewer departures, but they happen at a different time. Today I came to the bus stop, congratulating myself on my perfect timing, only to find that the bus had gone ten minutes ago and it was 50 minutes to the next. My coworkers probably assume I have the Monday Sickness. I'll probably forget during the workday and try to take a nonexistent bus home as well, waiting 50 minutes in the city without pay.