As far as i can tell from Mod Posts on the RSOF, it's going by current membership period. I think it was Mod Mark who used the example of "If you have been a member for the entire period up until now from the 25th of May 2011, you'll get in." Not worded exactly like that, but with the same meaning. That date was also an example, not the real due date. (Which I believe is set when you apply for the BETA.) Thanks for the clarification, much appreciated ^_^