User blog comment:Menara/The Son of Sobek: The official PJ and Kane Chronicles Crossover/@comment-120.144.56.247-20130527092945/@comment-75.13.129.37-20130528194600

Personally, I don't think the book is supposed to be set in one particular time period. It's just mostly an add-on to the current series that is going on right now. Or maybe it takes place after the House of Hades. I don't think Rick Riordan really put much thought into it.