Looking Backward by Edward Bellamy

I think if a person were ever excusable for losing track of the days of the week, the circumstances excused me. Indeed, if I had been told that the method of reckoning time had been wholly changed and the days were now counted in lots of five, ten, or fifteen instead of seven, I should have been in no way surprised after what I had already heard and seen of the twentieth century. The first time that any inquiry as to the days of the week occurred to me was the morning following the conversation related in the last chapter. At the breakfast table Dr. Leete asked me if I would care to hear a sermon.

"Is it Sunday, then? " I exclaimed.