Board Thread:Naruto Discussions/@comment-34509017-20171024180450/@comment-3279282-20171029134331

And then there's One Piece, where the author constantly takes days off to do research...

If Kishimoto cared enough, he would've taken the time to prepare and create a set timeline of events even before he began writing the manga. But he didn't and that's just one of the many reasons he's a bad mangaka and Naruto is a bad manga.