An economic calendar is a vital tool for investors, displaying a chronological chart of market-moving events such as economic indicators and monetary policy decisions. It includes key statistics like the US gross domestic product (GDP) released quarterly, and central bank meetings, such as the European Central Bank's (ECB) monthly sessions where interest rate decisions are announced. Each event is assigned a volatility level from 1 to 3, indicating its potential impact, with level three events—like monetary policy announcements, consumer price index (CPI), and employment data—being the most closely monitored. The calendar also emphasizes that events from major economies (e.g., the US or Eurozone) have a far greater market impact than those from smaller countries, such as Greece. By providing this information in advance, the calendar allows investors to research and anticipate releases, helping them prepare for potential market volatility.