ABANDONED. Possible sci-fi or fantasy - "why are there five more days in a year than degrees in a circle"

[Casey]

So i read this book around 2002 was a paper copy cant remember if fantasy or sci-fi it was either ya or adult and the only line i remember is asking "why are there five more days in a year than degrees in a circle" i know its not much to go on sorry and thanks for any help in advance

[Kris]

A long shot - Inca Gold by Clive Cussler?

[Lobstergirl, au gratin]

Casey, are you still looking for this or did you find it?

[Kris]

No response, moving to Abandoned folder.

Casey (OP) was last active on the site in July 2016.