Abstract: A multi-purpose clock including a known clock movement and a clock body accommodating the clock movement. The clock body has at least twelve hollow compartments disposed at the positions of the hours numerals. Each hollow compartment contains a turnable, block which is pivotally disposed therein by means of a couple of positioning element. Each block has at least one side showing an hour numeral and at least one side showing a list of the days of the corresponding calendar month. The blocks may also display various patterns to provide greater variety.