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Central Time Zone
The Central Time Zone, commonly abbreviated to CT, covers all of the state of Wisconsin and many other parts of the US. Like the other major time zones used around the US, the Central Time Zone is split into two forms depending on the time of year: Central Standard Time (CST) and Central Daylight Time (CDT). The former is six hours behind Coordinated Universal Time (UTC), while CDT is five hours behind UTC and is used during periods of daylight savings time.
Along with the entire state of Wisconsin, eight other states are fully covered by the Central Time Zone. CT is also observed in small to large parts of 11 additional states, covering 20 states in total. Central Time is also observed in around three-quarters of Mexico, as well as certain parts of Canada, some Caribbean Islands, and several Central American countries.
Daylight Savings in Wisconsin
The whole of Wisconsin, like almost all of US states, uses a system of daylight savings time each year. This period begins on the second Sunday of March and extends through to the first Sunday of November each year, with these dates being established in the Energy Policy Act of 2005. During this period of each year, WI observes CDT. For the remainder of the year, CST is observed throughout the state. Daylight savings time is used all around the US and other nations to save energy.