Rare Supermoon Lunar Eclipse Is Sunday, Sept. 27 If it is a clear night a full "blood moon" eclipse should be very "cool" I wonder if this will have an impact on some of the folks looking for doomsday this month. Some Mormons stocking up amid fears that doomsday could come this month | Survival Forums Rare Supermoon Lunar Eclipse Just One Week Away ................................................................ With the huge supermoon lunar eclipse just one week away, it's time to dust off your small telescopes and binoculars, track down an observatory event or webcast, or draft your invitations for a moon-cake party. Don't wait too long — if you miss it, the next one isn't until 2033. The supermoon lunar eclipse of 2015 will occur Sunday, Sept. 27, and is a confluence of three events: a full moon; a lunar eclipse, in which the Earth blocks the sun's light from hitting the moon; and lunar perigee, when the moon is in the closest part of its orbit to Earth. The last time such a confluence happened was in 1982; there were just five instances of it in the 20th century. This time around, viewers looking from the Americas, Europe, Africa, western Asia and the eastern Pacific Ocean will have a chance to see the show. [Video: Rare Super 'Blood Moon' Lunar Eclipse Coming, Last Until 2033] During lunar perigee, the moon appears larger and brighter in the sky, which is why a full moon coinciding with perigee is known as a "supermoon." (A "minimoon" is when the full moon is at its farthest point from the Earth.) This large moon will present the perfect canvas to watch the Earth's shadow slide over and block the moon's light. As if that weren't spectacular enough, there's the origin of the eclipse's other name, "blood moon." The moon doesn't simply disappear into Earth's shadow during a lunar eclipse; instead, it's illuminated by an eerie, reddish glow of the light refracting through the edges of Earth's atmosphere.