In a long setup, the market needs to be trading above the 21 EMA first. As the market retraces back to the moving average, day traders may be anticipating a turn higher from it. Therefore, if a buyer bar forms on the moving average it could be a sign of further buying momentum. However, a stop loss is always used to minimise losses in case the market turns the other way.
Once a pattern emerges, this is known as a Forex indicator because it indicates that there is the potential to make a profitable trade. While there are a range of resources available online for learning about the best Forex indicators, your trading software should ideally have a range of built-in indicators that you can use for your trading, as is the case with MetaTrader 5's indicators. You can learn more about technical analysis in our Introduction to Technical Analysis article.
One unique aspect of this international market is that there is no central marketplace for foreign exchange. Rather, currency trading is conducted electronically over-the-counter (OTC), which means that all transactions occur via computer networks between traders around the world, rather than on one centralized exchange. The market is open 24 hours a day, five and a half days a week, and currencies are traded worldwide in the major financial centers of London, New York, Tokyo, Zurich, Frankfurt, Hong Kong, Singapore, Paris and Sydney—across almost every time zone. This means that when the trading day in the U.S. ends, the forex market begins anew in Tokyo and Hong Kong. As such, the forex market can be extremely active any time of the day, with price quotes changing constantly.