The Invisible Midnight Bug: How Date Shear Sabotages Batch Operations

Date Shear is a class of elusive production bugs that only surface when code execution crosses time boundaries—a scenario rarely tested but common in overnight batch processes. Because developers lack a shared term for this pattern, these bugs often slip through code reviews and architectural planning. By recognizing and naming Date Shear, teams can build more robust systems and catch these hidden logic flaws before they reach production.