A Woman a Day — Philip Jose Farmer

Post-holocaust Paris is a pretty seedy stand-in for the original, but hat can you expect when te government's main function is Orgasm Prevention, and when the national heor is wandering around in Nowhen... But things are changing! Rumor has it that the Timetraveler is coming back. In a few months. At which point, Time iself will come to an end... --- from book's back cover