Sundial Timekeeping
Exploring the Oldest Method of Time Measurement: Celestial Observations

Discover how ancient civilizations used celestial events to track time with sundials and more. Learn the origins of timekeeping!

Future Days
Will Earth Have 1000-Hour Days in 50 Billion Years? Insights on Planetary Rotation

Explore the potential for 1000-hour days on Earth in the future and the factors influencing its rotation.