EST Word is an acronym for EASTERN Standard Time Word. It is a term used to refer to the time zone in the EASTERN part of the United States and Canada. This time zone is five hours behind Coordinated Universal Time (UTC). EST Word is often used to refer to the time zone in which the EASTERN part of the United States and Canada are located. It is also used to refer to the time zone in which the EASTERN part of the United States and Canada observe Daylight Saving Time.