Casinos' lack of clocks and windows as a time‑loss joke

Many Las Vegas casinos are designed without visible clocks or obvious windows on gaming floors, a practice widely reported in journalism and industry commentary as intended to minimize players’ sense of time. Locals commonly joke that casinos deliberately erase the clock so visitors "lose track of time" while gambling. The design feature is evident in major Strip resorts and is a frequent subject of visitor anecdotes and local humor.