Yesterday Was Monday by Theodore Sturgeon - Slight error somewhere! He got behind the scenes, and woke up Wednesday morning although Yesterday was Monday. The builders hadn't finished making Wednesday yet–
Theodore Sturgeon (1918–1985) began his writing career in the 1940s and quickly gained recognition for his short stories and novels, many of which challenged traditional sci-fi tropes by focusing on characterization and psychological depth. His notable works include "More Than Human," and the influential short story "Baby Is Three."