How did the early explorers tell time?

Early explorers primarily told time using sundials and water clocks, which relied on the position of the sun and the flow of water, respectively. They also utilized celestial navigation, observing the stars and planets to determine their position and approximate time. Hourglasses made of sand were another common method, allowing for a more portable way to measure time during voyages. Additionally, explorers often relied on natural indicators, such as the changing position of the sun throughout the day.