A small, sensible change
Rotate the pfp.
Leave the rest alone.
Set two profile-picture slots and let the schedule do the remembering. This page plans the change; it does not pretend to edit an external account for you.
Your schedule
Two slots. Twelve hours.
Your schedule is saved on this device. Use the exported handoff when making the actual profile change.
Live readout
Set a start time.
12:00:00
The active slot and next switch will appear here once the schedule begins.