This might work.
Check out @Mariano_Colmenarejo Edge Driver Virtual Appliances Mc which has a virtual text device. In theory, I’m thinking two routines. One routine to run on Friday at 0000 if pre-condition virtual text field equals Work Week, then set virtual text field to Holiday Week with a delay of at least 2 minutes. And another routine to run on Friday at 0000 if pre-condition virtual text field equals Holiday Week, then set virtual text field to Work Week with a delay of at least 2 minutes and turn On the Holiday switch with auto-turn off in X hours. If this works, then it has the added benefit of running local on the Hub. Plus you can manually change the virtual text field to either Work Week or Holiday Week depending on your schedule, or even remove the text field completely to disable the routines from running.
