when is the end of a working day
End of day End of day (EOD), end of business (EOB), close of business (COB), close of play (COP) or end of play (EOP) is the end of the trading day in financial markets, the point when trading ceases. In some markets it is actually defined as the point in time a few minutes prior to the actual cessation of trading, when the regular traders' orders are no longer received. During this period, the market is performing what is called a "Run To Cash", which is when the market is reconciling to its underlying cash market. EOB, COB and COP in the U.S. is usually at 5:00 pm but typically 5:30 pm in the United Kingdom while EOD is 23:59.