Keywords latitude, longitude, Earth, Prime Meridian, time zones, International Date Line, geography, location, measurement Email us at [email protected] if you have questions about the footage ...

On this day in 1883, railroad companies in the United States and Canada transformed time in both countries, leading to the ground-breaking concept of time zones around the world.

By degrees of longitude Beijing, more than 3,000km to the east, should be about two and a half hours ahead of Kashgar. ... Not all time-zone changes are as extreme as China’s.

A person may take knowing the local time for granted, but an official review revealed that there is no single, accurate map showing the nation’s time zones and local observance of Daylight ...

Greenwich Mean Time (GMT) is the standard time zone. Each 15° longitude west of this line is an hour earlier than that GMT, while each 15° east is an hour later.

North American railroads created time zones to bring sanity to scheduling transcontinental travel on this day in history, Nov. 18, 1883. The system was quickly adopted around the world.

This is why the time the new moon (or any other phase) happens is based on one's longitude and time zone. The new moon of May occurs on May 7 at 11:22 p.m. Eastern Daylight Time ...

In 1884, at the insistence of the United States, an international conference was held in Washington, DC, to decide "a meridian to be employed as a common zero of longitude and standard of time ...