Distance. Each zone is 1/24th of the Earth's circumference,
or about 1000 miles at the equator
and about 600 miles in the US.
to make their schedules more standard
To save. Daylight.
They always crashed into each other.
to make their schedules more standard
Railroads initially divided the U.S. into four standard time zones in 1883 to address the confusion caused by the numerous local timekeeping practices. As trains began operating across long distances, the lack of a standardized time made scheduling difficult and increased the risk of accidents. The introduction of these time zones facilitated more efficient train operations and improved safety by creating a uniform timetable across the country. This change was officially adopted by the railroads and later became a standard for the entire nation.
The railroads divided the US into four standard time zones to make their schedules more standard.
to make their schedules more standard
to make their schedules more standard
To save. Daylight.
They always crashed into each other.
The railroads divided the US into four standard time zones to make their schedules more standard.
to make their schedules more standard
The railroads
to make their schedules more standard
Divided the United States into time zones. APEX
Divided the United States into time zones.
Divided the United States into time zones. APEX