^^^
In the long run I would think it easier just to use a script. I hate having to place events on every single map. I have tried making a clock with events once, it was so complicated I gave up haha.
Lol, then I already know why you think it's complicated.
Use 2 parrallel proccess common events.
Each one with their own switches.
THE SWITCHES
005:Run Clock
and
006:Show Clock
The EVENTS
Clock Proccessing
Clock Showing
All you would have to do is flip 006;Show Clock off to stop showing the clock.
And if you were to pause the game and didn't want the clock to keep running just flip the Run Clock Switch off.
You don't need to put an event on every map, and the events would be supprisingly shorter than you may imagine, a lot shorter than a simple banking system, etc.