This strategy is very simple and is based on statistical study. Even if the edge is slim , the EURO has a tendency to decrease during european markets and has a tendency to increase during US markets. Naturally , it is not taking into account important annoucements that could change the tendency. So i decided to sell at 5 millions between 8 and 13 (approximately) and to buy the EUR/USD between 14 and 19 (aprroximately). The closing is set at the certain time , so the closing conditions of the position are of no matter.