This Is How We Got Time Zones and Why They Aren't Straight Lines
Briefly

The need to make sense of railroad schedules led to the formation of time zones, highlighting the importance of precise timekeeping in connected transportation.
Time zones aren't uniform globally due to various political and economic factors, which shape their peculiar zigzagging patterns around the world.
Before time zones, people simply lived by the sun’s movement; accurate timekeeping became essential with advancements in communication and transportation technologies.
Without time zones, international travelers would face significant confusion regarding meal times and daily activities, making established time zones beneficial for global coordination.
Read at 24/7 Wall St.
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