I remembered another of the dreams! It was obviously triggered by the fact that I had my Japanese class today and that I'm always worried about getting there too late or too early when I go on a vacation day, since it's easy to tell how long it's going to take when I go from work, but I'm never sure when I go from home. Anyhow... all that really happened in the dream was that I showed up for my Japanese class and I went to my classroom. I was sitting there and a different teacher came in and then I noticed that a whole bunch of students I didn't recognize came in. And no one seemed to think it odd that I was there. Then I realized that I was 3 hours early for class. And that was it. Not a particularly meaningful dream, but oh well.