Msquare:
You will need to (re)set the time sometime. Daylightsaving f.ex. Or a powerloss, battery change. The "patience" was that my little onebutton algorithm involved waiting for a few secs for it to advance to the next digit and entering 9 required - yes, nine pushes.
Oh, I thought you meant pushing the minute button 60 times to advance one hour 
Well, that's convenient enough. May I ask how did you do it?
Okay, thanks!