While in Paris, we scouted out the home stores and found ourselves twice in Habitat - the affordable Terence Conran outfit that we no longer have here. The Flap Clock (£75) was one of many neat things we saw (and the only one we bought).
Designed like something you would see in a train station or a socialist government office, Flap has a lovely retro feel and keeps track of all the dates and time you need. On Saturdays and Sundays the day plates are green and red, the am/pm switches at noon every day and if you buy it in Paris the names are all in French. MGR