Eastern Time (ET) is the time zone for the eastern part of the United States, including cities such as New York, Philadelphia, and Washington, D.C. Central Time (CT) is the time zone for the central part of the United States, including cities such as Chicago, Dallas, and Houston. Eastern Time is one hour ahead of Central Time, meaning that when it is noon in Central Time, it is 1 p.m. in Eastern Time. The two time zones are also two hours apart during Daylight Saving Time, when the clocks are adjusted forward one hour in the spring and back one hour in the fall.
Eastern Time is used in states such as New York, New Jersey, Pennsylvania, and Florida, as well as parts of Canada and the Caribbean Islands. Central Time is used in states such as Illinois, Wisconsin, Missouri, Oklahoma, and Texas. Eastern and Central Time are also used in some parts of Mexico, Central America, and South America. Eastern Time is sometimes referred to as “Eastern Standard Time” (EST) when Daylight Saving Time is not in effect.