This week the full moon occurs only once every 3 years


This week, for the first time in three years, the September full moon is in a unique position: it happened at the beginning of the month – a time that gives it a completely different name, the Corn Moon – instead of the harvest moon – it sets the stage for having two full moons for that full October. That is, the rare blue moon will shine HalloweenOctober 31.

The full moon, designated for the East Coast corn harvest, will reach full moon on Wednesday, Sept. 2, at 1:22 a.m. EDT (5:22 UTC). According to NASA.