By “course of the day”, in German Tageslauf, we mean the regular progression of the hours. The definition in Grimm's Dictionary is accordingly brief: “Tageslauf, m., der lauf eines tages und des täglichen lebens” (“The course of a day and of daily life”) [2]. It goes on to list compounds no longer in use: “Tageslauft, m., plural, tagesläufte, tagesereignisse” (“daily events”) [3]. Taken together, these meanings bring us close to the spectrum of themes to be considered in …