Adding a scheduled set of actions every 24h

I want to create a scheduled set of actions to take place every 24h exactly at 20:59:59pm:

1) The current Round's "active" boolean to turn from true to false
2) A new Round to be created in DB at 21:00:00 with active boolean "true"; expiry set at 20:59:59 next day; and serial number to be +1 on the serial number of the previously active Round.

So, how can I achieve this in FlutterFlow??? I tried doing it with "Start Periodic Action" on HomePage every 36000000 miliseconds, but that will happen only on Pageload, rather than a specific time.
Can someone please help?
Many thanks in advance.