Time is a concept that helps us understand the sequence and duration of events. It is measured in units such as seconds, minutes, hours, days, and years. Time allows us to organize our lives, schedule activities, and coordinate with others. The measurement of time is based on natural phenomena, such as the rotation of the Earth on its axis, which creates day and night, and its orbit around the Sun, which defines a year. Various tools, like clocks and calendars, help us keep track of time and its passage in our daily lives.