The Sands of Time is a children's fantasy novel by American writer Michael Hoeye.

In each one Hermux Tantamoq, mouse, watchmaker, and occasional detective, is the main character.

At the beginning of the story, protagonist Hermux Tantamoq is approached by his father's friend, Birch Tentintrotter, to investigate whether the present-day rodent civilization was preceded, and its technology informed, by a feline civilization now obscured.

They are thereupon captured by Hinkum Stepfitchler, who reveals that his family made their fortune by plagiarizing the cats' technology.

Thereafter the ruined feline city is re-created at a rodents' museum, with all its artifacts, at a grand celebration.