It shows the time and it constructs phrases - the whole day. 43200 different ones. Imagine you would read the clock 3 times a day: believe me or not (or do the calculation yourself ;), it would take you about 40 years to know each phrase the clock is able to produce. I like the idea that the clock not just makes time visible, it also generates a "word space" which we can explore. From mundane topics like "The early bird manipulates the good mood" to philosophical inspiring phrases like "Mind constructs the brain".