NASA Explains the Harvest Moon

Last night's full moon? There's a name for it

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The brightness of last night’s moon has been noted throughout history, and it even has a special name. That’s because it’s been around since the days when farmers would harvest their crops by moonlight at the busiest time of year. The Harvest Moon is the full moon of September, which falls closest to the autumnal equinox on September 22. This means that whether we like it or not, fall is quickly approaching.