Extension includes swap trading center open for trading center expire in the next settlement date. For example, for transactions that are performed on Monday, the value date is Wednesday. Nevertheless, if you open a trading center on Monday and remained open during the night, the value becomes Thursday. The exception is in the case of centers that remain open on Wednesday night. The usual history of the value is supposed to be on Saturday; but because banks are closed Saturday, the value would be in practice is the following Monday. Because there are weekends, the trading centers open at night on Wednesday incur or earn interest for the two additions. Transactions whose value date falls on holidays also will incur or earn an additional benefit. Forex traders can profit for the benefit of the extension, according to the direction of their trading centers and the interest rate differential between the two currencies. For example, the basic interest rate in Great Britain is higher than in Japan, so if a trader bought the British pound, he will earn interest by five pm Eastern Standard Time. On the other hand, if he sold the Pound in this pair, it will pay interest at five pm Eastern Standard Time. Utility installation paid automatically to the customer's account after buying the currency with a higher interest rate in the country, is deducted from the customer's account if the country that issued the currency provides basic interest rates less than the corresponding currency.