Standard time is divided into how many time zones?

The concept of standard time being divided into 24 time zones is based on the Earth's rotation, where it takes approximately 24 hours for the Earth to complete a full rotation. Each time zone generally corresponds to one hour of time, which is why there are 24 primary time zones around the globe. This system allows for consistent timekeeping, where each zone represents a standard offset from Coordinated Universal Time (UTC).

This framework is essential for scheduling and coordinating international travel, trade, and communication, facilitating a systematic approach to time that is recognized worldwide. The division into 24 time zones aligns neatly with the 360 degrees of longitude, where each time zone typically spans 15 degrees, thus ensuring that local noon occurs when the sun is at its highest point in the sky for that region.