Before the adoption of time zones, clocks in the US and Canada were set according to the position of the sun overhead, meaning that time varied according to location. For the rail industry, this presented a logistical nightmare, and so many railroads kept their own time, further complicating matters. Standardization solved everything. On “The Day of Two Noons,” train stations reset their clocks according to newly adopted time standards. Which US city continued to keep local time until the 1900s? Discuss
Source: The Free Dictionary