The numbers aren't published the same day that they occur. There is usually at least a few days lag. The numbers would also be far less useful if there wasn't a known consistency to the time periods. One week could have 8 days, another only 6.
It was one thing to just not know what day the numbers ran through. This theory though that they just use random times every week is ridiculous. It is not presumptuous to assume they use a sane, consistent time period.
As far as you assume. Dude, much of this is analytical and based on assumption therefor it's all a general guess. That is why many of the numbers don't add up to the same if you check different sources. This is why it's so common to have things over tracked or under tracked.
Again, we don't know this in entirty. Some might be taking numbers from the exact day to be submitted especially since it is from so many different sources, meaning all the different retailers, which only some actually submit and others don't.
Anyway... This is very far from the original conversation...
Gotta figure out how to set these up lol.