Philip Jose Farmer Dayworld Trilogy pld991

Dayworld is a trilogy of science fiction novels by Philip José Farmer. They are set in a dystopian future in which people are allowed to live only one day of the week. For the rest of the six days they are 'stoned,' a kind of suspended animation. The novels focus on a man, Jeff Caird, who is a daybreaker: someone who lives more than one day a week. As the series progresses, the main character seems to be suffering from Dissociative Identity Disorder. The novels comprising the trilogy are:

Dayworld (1985)
Dayworld Rebel (1987)
Dayworld Breakup (1990)