Global Positioning System (GPS) satellites are launched with clocks intentionally programmed to run slower, a necessity confirmed by Albert Einstein’s theory of relativity. Due to the effects of relativity, atomic clocks in space experience time at a different rate than those on Earth. Specifically, the clocks on GPS satellites run *faster* than clocks on the ground. To maintain accuracy, satellite clocks are pre-set to tick slower before launch, compensating for this relativistic effect. Without this correction, GPS positioning would quickly become inaccurate, accumulating errors of several kilometers per day. This demonstrates a practical, everyday application of Einstein’s theories and highlights their importance in modern technology. The system’s functionality depends on accounting for these time discrepancies to provide precise location data.