Moonstruck

(CNN) -- The heavens will deliver a rare treat to moonstruck romantics and werewolves Sunday who rise before the sun.

A feat of lunar synchronicity will create a Supermoon.

This happens when the moon is full and at the same time reaches its perigee -- the closest point to Earth in its orbit, according to NASA.

It makes for the biggest, brightest moon of the year. A Supermoon, sometimes called a Super Full Moon, is 14% larger and 30% brighter than most full moons, NASA says.

SUPERMOON - JUNE 2013

What is a Supermoon?

Taken separately, neither a full moon nor the perigee is a big deal. The moon is full roughly once a month, and it reaches its perigee just as often, but the next time both will coincide will be August 2014.