There are people from day 5 and even day 7 confirming that they're in, so consensus is that it's biased towards but not exclusive to day 1. Higher chance if you're on a different language version of the site, probably. I have been reading spoilers all day, being incorrigible. Can anyone explain to me why I'm simultaneously irked beyond belief by JKR's voice-of-god destruction of my complex Potterworld fantasy life, yet unable to stop refreshing my email in the vain hope of getting in sooner that way? I suspect it's the nerd gene thing. Odi et amo and I don't even have access yet. But the backstories I'm seeing leaked are killing me.