Earth Overshoot Day
We're 209 days into the year, but we've already crossed the point where humanity has started consuming the world's resources faster that they can be regenerated or replenished. In 2018, the Overshoot day was also 29 July, the earliest it has ever been.
July 29 marks the point at which we start to consume more than the Earth can replenish. And this date is getting earlier each year.