LOL, I am c't reader as well and found it funny, but too tricky to find out the time.
Not sure, if my answer ist interesting to you.
At the moment I work on a project (the layout is not pefect as you see) for a clock.
I'll attach you a snapshot.
And it is not too hard. I found this clock by good luck into the free compontent tvplanit / gadgets.
So if you like clocks, have a look at it.
You even can change the faces of the analog clock and the size of the digital digits.
3 runmodi are included: normal watch, contdown and alarm.