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The United States would have to wait until the late 19th century for proper time zones to be introduced. Up until that time, citizens would rely on the sun as their main method for telling the time; when the sun passed the meridian, cities, and towns would set their clocks to midday. This system was quickly deemed to be outdated as rail and telecommunications networks spread out across the nation, and a new system needed to be introduced.
So, in November of 1883, four time zones were drawn up for the contiguous United States. The state of Minnesota was placed in the Central Time Zone alongside many other states, while others were added to the Eastern, Mountain, and Pacific Time Zones. All of the major cities in these zones were informed of their new standard times on November 18.
Central Time Zone
The Central Time Zone (CT) covers all of the state of Minnesota, as well as applying in many other parts of the US and Central America too. CT comes in two varieties: Central Standard Time (CST) and Central Daylight Time (CDT). The standard version is six hours behind Coordinated Universal Time (UTC), while the daylight version is five hours behind UTC.
Along with all of Minnesota, the Central Time Zone covers eight more states in their entirety, including Illinois and Wisconsin, as well as parts of 11 other states. The Central Time Zone is also used in the vast majority of Mexico, along with several Central American countries, the Caribbean Islands, and parts of Canada.
Daylight Savings in MN
The whole of MN, just like the vast majority of other US states, utilizes daylight savings time for several months of the year. This system was first introduced in 1966 with the Uniform Time Act but has since been amended and expanded after the Energy Policy Act of 2005. In Minnesota and other US states, daylight savings time begins on the second Sunday of March and runs through to the first Sunday of November. During this period each year, MN observes CDT rather than CST.