Schedule a call with Twilio and Django

Hello,

I am making a Twilio IVR using Django. I am looking to make it that when I add a certain object on the admin page (and set a start date for it), a Twilio call will automatically be scheduled for that date and time. How would I do that? My question is the call scheduling part, not how to have that action triggered when I add an object from that model. Thanks!