How Did the Idea of ‘Time Zones’ Come to Be?

Imagine the world has one big clock, and everyone shares it. But when you travel east or west, your day starts at different times. That’s why we created time zones, like slices of a giant pie that help people match their days with others nearby.

Before time zones, cities had their own local time. For example, if it was noon in London, it might be 10:30 AM in Paris and 2 PM in Berlin. This caused problems for travelers and merchants who needed to keep track of different times.

Now, the world is divided into slices, like a pie, called time zones. Each slice has its own time. When you move from one slice to another, your clock either gains or loses an hour, depending on which direction you travel.