To understand time zones, start by thinking about the shape of the Earth. You know our planet is a sphere that spins on an imaginary pole called its axis. Every 24 hours, the Earth makes a complete rotation. We call each full turn a day
As Earth rotates on its axis, it moves about 15 degrees every 60 minutes. After 24 hours, it has completed a full rotation of 360 degrees. The scientists used this information to divide the planet into 24 sections or time zones. Each time zone is 15 degrees of longitude wide