User blog comment:SayuriDarling/The Staff of Serapis Official Discussion/@comment-1515612-20140414043951/@comment-5183385-20140414044936

yeah i was thinking that it is at least after the SoN because Annabeth knows Hank and the argo II is already flying. This also means that the Son of Sobek is after it as well because it took place only a few weeks after Son of Sobek.