Time zone eastern (ET) is a time zone contains 17 states in the eastern part of the mainland of the United States, parts of eastern Canada, the state of in Mexico, Panama in Central America and the islands of the Caribbean. This timezone (EST), five hours ago of hours Coordinated Universal Time, Greenwich - GMT) is (yuty thirty 5:00-). In the summer time (EDT), four hours prior to the coordinated World Ends (yuty thirty 4:00-).