[JaTochNietDan]

I don't see anything that would cause the message to be sent more than once every 60 minutes to each player. Are you sure you're not using a timer to call "DatumTimer" function somewhere else?

Also additionally your string length is madness! 256 cells for that message? The message has a max length of around 24! That's a lot of wasted memory being allocated

Edit: You've also got an extra 0 in the timer length, which means it's called every 10 hours instead of 1 hour!