clocks and calendars

Clocks measure time by dividing it into regular intervals, typically hours, minutes, and seconds, allowing us to track daily activities. Calendars organize these time segments into days, weeks, months, and years, helping us plan and record events over longer periods. Both systems are based on Earth's rotation and orbit: a day corresponds to one full spin of Earth, while a year represents its orbit around the Sun. Clocks and calendars work together to structure our understanding of time, ensuring consistency and coordination in personal, social, and professional life.