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conflicting train schedules
conflict train schedules
conflict train schedules
to make their schedules more standard
There were no time zones anywhere in the world before the United States railroads set up the system. Before time zones all clocks were set to local time based on when the sun reached noon in that town. This made it impossible for the railroads to create workable train schedules throughout their entire system. Time zones made it possible to schedule trains and keep them operating on schedule.
conflicting train schedules
conflict train schedules
conflict train schedules
sychronize train schedules
In the United States, the creation of standardized time zones greatly improved the ability to schedule train times and to manage train movements.
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
Divided the United States into time zones. APEX
Divided the United States into time zones. APEX
Divided the United States into time zones.
to make their schedules more standard