Each time zone is about 15 degrees of longitude apiece, and there are 24 of them. This means the zones are about one hour apart. In local areas, though, the lines are not always straight ...

Time zones are a relatively recent invention. They date back to the 19th Century and were designed to reconcile the needs of the then-new railroad industry with the ingrained habits of a ...

This means: Time zones are not always in straight lines on the longitudes on Earth. This is because they may need to curve around country borders. You can see this in the map below. It is night ...

Russia wishes it were ... which they would measure (it had already been used by sailors for centuries). Every 15 longitudinal degrees, the time changed by an hour, thus creating 24 time zones ...

Other employees I spoke with said it felt as if working hours had no meaning in the remote world and that they were "on call" more than before, often because of their time-zone difference.

They adopted five time zones: Intercolonial Time (now known as Atlantic Time in eastern Canada) and the Eastern, Central, Mountain and Pacific time zones. The U.S. zones were based on solar noon ...

But when there are two different time zones ... were 144 "local times" in the U.S. As railroads began making travel faster, travelers could sometimes arrive at an earlier local time than the one ...