What is what does cdt mean?

CDT stands for Central Daylight Time. It is a time zone used in North America, primarily in central regions of the United States and Canada during the spring and summer months when Daylight Saving Time is in effect. CDT is six hours behind Coordinated Universal Time (UTC-6) and it is observed from the second Sunday in March to the first Sunday in November. Some examples of cities in this time zone include Chicago, Dallas, Winnipeg, and Mexico City.