An astronomical clock is a timekeeping device that not only tells the time but also displays astronomical information. These clocks often show the positions of celestial bodies, such as the Sun and Moon, and can indicate phases of the Moon and the time of sunrise and sunset. They are designed to represent the movements of the heavens, making them both functional and educational. Typically found in public spaces like town squares or churches, astronomical clocks are intricate and beautifully crafted. One of the most famous examples is the Prague Astronomical Clock in the Czech Republic, which dates back to the 15th century. These clocks serve as a reminder of humanity's fascination with the cosmos and our efforts to understand time.