Someone asked this in DM and I thought it could be of interest to others
“What would you say is the best way to run a layer everyday? Is there a looping function ?”
There are several ways to achieve what I think you want to achieve. 
The easiest way to achieve looping is to use markers in combination with Run on Marker and Go to Marker nodes.
Another answer to your question: “the best way to run a layer everyday” is that you create 2 layers: Logic layer and DoSomething layer.
The logic layer just takes care of , you guessed it, the logic. It could look something like this.
Here I created a boolean Global variable called BetweenTime. It is set to True if system time is between 8 and 14 (2pm). Otherwise it is set to False.
Then, in the DoSomething layer, we do something only if BetweenTime variable is set to True.
In the above image, I placed a single Render to Canvas node, but it could be anything else.
I hope this helps, but should you need more info, just ask.
Mitja