Word to describe "legal ability to advertise"

I'm looking for a single word that describes a "legal ability to advertise" ("... to publish" and "... to communicate" are viable options too). I would like to use it in the following sentence:

You have 3 days until advertiseability of x.

I've considered communicability but I think it's related mostly to diseases.

The context is: I'm trying to find a name for a function in a programming language, so it should be short and concise. Something like: daysUntilAdvertiseabilityOf(x); Basically, you can publish an ad in three days, but not before.