It's like streets closed for a city marathon: you can't open the roads early, but you can avoid planning a drive for the hours they're closed.
The biggest events are central bank decisions, figures on how fast prices are rising in a country, and the US jobs report, which usually comes out on the first Friday of the month. Each event in the calendar has an importance mark: one, two or three. On Investing.com these are bull icons, and in the filter they're stars. Why this news moves the market so much, we'll cover in course 7. For now, one thing matters: knowing when it comes out. Each news item in the calendar has three numbers: previous, forecast and actual — the forecast is what the market expects.