The Professor was going to mark their sundials each hour so that they did not have to do that? Dorian was happy about that. He was afraid he would forget to walk to the astronomy tower and mark his sundial in the first place while he was studying.

"First of, thanks for wanting to mark our sundials for us every hour, Professor" he said after raising his hand because he honestly did not NEED to do that, before he continued to answer the question. "Theodosius was his name and he was both a astronomer and mathematician. He also wrote a book about the geometry of the sphere" don't ask him the title of that book though, cause that he did not know.