What Does Cob Mean?

COB is an acronym that stands for "close of business" that professional organizations use when referring to the end of the business day. Many professionals base COB hours on times that businesses traditionally close in the United States, which is typically 5 pm Eastern Standard Time (EST).

What does by COB tomorrow mean?

​close of business (the time when business ends for the day) We need to come to a decision by COB tomorrow.

What is COB in an email?

COB, meaning Close Of Business (end of work day). Implying that something should happen by the end of the typical work shift. COP or EOP, meaning Close Of Play / End Of Play.