Euro cheques, electronic transfers, banking, etc.) at midnight on 1 January 1999, when the national currencies of participating countries (the eurozone) ceased to exist independently. Their exchange rates were locked at fixed rates against each other. The euro thus became the successor to the European Currency Unit (ECU). The notes and coins for the old currencies, however, continued to be used as legal tender until new euro notes and coins were introduced on 1 January 2002. The changeover period during which the former currencies' notes and coins were exchanged for those of the euro lasted about two months, until 28 February
Euro Currency Index Euro Currency Index (ECX, also EURX or EXY) was launched on 13 January 2006 by the New York Board of Trade (NYBOT) and calculated back to 2001. In 2007, the IntercontinentalExchange (ICE) based in Atlanta (USA) changed the name of the stock exchange in IntercontinentalExchange The index was a ratio that compared the value of the Euro by a currency basket of five currencies: US-Dollar (31.55 percent), British Pound (30.56 percent), Japanese Yen (18.91 percent), Swiss Franc (11.13 percent) and Swedish Krona (7.85 percent). The ECX was the geometrically weighted average compared to these currencies. The formula for the calculation