From a Washington Post story by Geoff Chester headlined “Blue Moon, Perseid meteor shower highlight busy August in the heavens”:

August is going to be a busy month in the heavens. We’ll have two full moons, the year’s best meteor shower, and, although we will lose sight of two planets, two more swing into view.

Twice in a month, or once in a blue moon?

The month’s first full moon happens Tuesday at 2:32 p.m. Eastern time. August’s full moon is traditionally known as the Sturgeon Moon here in North America, because the continent’s largest freshwater fish are beginning their spawning season. Other names include the Grain Moon and Corn Moon.