Dear Fabian,
I think there is a workaround that achieves what you want. You can use a variable to select which recording you want to start and then use the sunset/sunrise event to start and stop a recording selected by the variable. So for every day you have an action that changes the value of a variable, for example you set variable 1 to value 1 every Monday at 11.00 am, every Tuesday at 11.00 am you set variable 1 to value 2 ect. Then you have one action that will start a recording selected by that variable (Playstate, Start variable).
Please let me know whether this achieves what you where looking for.
Kind regards,
Jurriën