What is the significance of the sun on the horizon in relation to navigation and timekeeping?

The sun on the horizon is significant for navigation and timekeeping because it can help determine direction (east/west) and time of day (morning/evening). By observing the sun's position in relation to the horizon, navigators can determine their heading and estimate the time. This method, known as solar navigation, has been used for centuries by sailors and explorers to navigate the seas and track time.