Is there a program / a way to automatically let a program, e.g. Rainlendar, start (and close at another time) at a special time, e.g. 9 o' clock in the morning, if it is not already running?

Hai.

Perhaps with DShutdown ( Trouver DShutdown dans le menu): these program can shutdown or wake up PC and launch a specified app.
See the capture :



JP4U

Hai JP4U,

Good idea, thank you.

And many thanks for the screenshot. What is irritating me quite a bit is the title of the window, "Shutdown Schedule", and the "Timer" also, "Shutdown on / at / after", it sounds like the computer would be shut downed. I would try it, but I cannot shut down my Notebook at the moment. "Shutdown type" has some items which does not seem to shut down anything, but "Shutdown type" also sounds like shutting down anything, e.g. the computer.