Before 1883, America had over 300 local times based on the sun, causing dangerous train collisions like the 1853 Rhode Island crash that killed 14 people. Railroads solved this by implementing standardized time zones on November 18, 1883, sending a single telegraph signal from Philadelphia to reset all railroad clocks across the country to four new time zones. Some cities had to turn their clocks backward, creating the 'day of two noons' phenomenon. The US government didn't officially adopt these time zones until 35 years later, making railroads the true inventors of the modern time system.
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America’s Clocks Were Complete ChaosAdded:
Before 1883, every town in America set its own clock based on the sun directly overhead. There were over 300 different local times across the country. In 1853, two trains collided in Rhode Island because the engineers watches disagreed by just a [music] few minutes. 14 people died. That deadly crash pushed the railroads to fix the time problem themselves. On November 18th, 1883, the railroads sent one telegraph signal from Philadelphia. And just like that, every railroad clock across the country [music] was reset to the four new time zones. Some cities had to turn their clocks backward to sync up, which meant in those cities, the clock hit 12:00 once, then got turned [music] back, and hit 12:00 again later that same day.
That's why they called it the day of two noons. Congress had no part in this. The US government didn't officially adopt these time zones until 35 years later.
>> [music] >> The hours you live by today, invented by railroads, not your government.
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