Reserve Scheduling question:

I've been on call since the 13th and go until the 23rd. I have not had 24 hrs off free from duty yet. Not on a layover, not at home. When do I have to have it by? Is it sometime in those 7 days, or can it be the 8th day? SC today and SC again tomorrow with no rest and tomorrow is my 7th day.

I know they don't have to give it to me since I am on an international category and I just get restricted to International flights, but want to know when that restriction will kick in. Thanks in advance.