Below is a chart summarizing what we have looked at so far regarding the sequence of kingdoms depicted in Daniel chapters 2, 7, and 8. What does this tell us about the cleansing of the sanctuary?
As we can see here, there are parallels between the chapters. Not only are the nations depicted in parallel to each other, the judgment scene in Daniel chapter 7 — which arises after the 1,260 years (A.D.538-1798) of papal Rome, directly parallels the cleansing of the sanctuary, which in Daniel chapter 8 arises after Rome as well. In short, this heavenly judgment in Daniel chapter 7 — the judgment that leads to the end of the world — is the same thing as the cleansing of the sanctuary in Daniel chapter 8. We are given here two different depictions of the same thing, and both occur after the 1,260-year period of persecution perpetrated by the little horn power.