Due to different zero points for elevation, a bridge across the Rhine River experienced a 54-centimeter misalignment between German and Swiss sides.To standardize elevation measurement globally, the International Height Reference Frame (IHRF) was adopted in 2015.The most accurate clock in space, the Atomic Clock Ensemble in Space (ACES), was launched to enhance precision.ACES, consisting of cesium and hydrogen atomic clocks, offers unparalleled precision and stability.Geodesists can use ACES to perform tests of fundamental physics and make more precise gravitational measurements.A synchronized clock network from space will aid in establishing a more accurate zero point for elevation measurements worldwide.The current geoid model lacks precision, particularly in Africa and South America, due to limited surveys.Proposed worldwide clock network aims to map Earth's gravitational field more accurately, leading to a more precise geoid model.Improving the geoid's precision can aid in infrastructure projects and resolving disputes, like the Mount Everest height discrepancy.Development of the clock network is a lengthy process requiring dedicated efforts from scientists and engineers.