Everyone who is into reading Shonen Jump's latest content quickly learns that, despite the magazine being launched on Sundays/Mondays (it's on Mondays in Japan, but depending on where you live, it's on Sundays), the leaks are usually out mid-week (around Wednesday). Many One Piece fans get information about the next chapters before the official launch, for example — sometimes even when they don't want to, because these leaks quickly spread through social media.