The brightest moon isn't called anything special. The brightness of the moon depends on its phase, not a specific name.

Here's why:

* Moon Phases: The moon doesn't produce its own light, it reflects sunlight. The amount of sunlight reflected depends on the angle of the sun hitting the moon.

* Full Moon: The full moon is the brightest because the entire face of the moon is illuminated by the sun.

* Other Phases: As the moon goes through its phases, the amount of sunlight reflected decreases, making it appear less bright.

So, while there's no special name for the brightest moon, it's always the full moon that shines most brightly.