OK, I don't know what this is.
At random and unpredictable times the Canon G12, when powered on, will show the display as seen above. It's been happening since I got the camera a few months ago; it'll disappear upon turning the camera off and then on again. Up until now I've never had another camera available to record the event; luckily, I was able to borrow Barbara's nice new S95 the other night to take a quick snap.
I don't know what the display is supposed to represent. Although it doesn't match up with the time of day it does seem to be some sort of clock . . . (?)