Once every two decades or so, a supermoon - a full moon at its closest point to Earth - coincides with a lunar eclipse.
Supermoon is the term used to describe Earth's moon at perigee, when its orbit brings it closest to the Earth.
"That's rare because it's something an entire generation may not have seen", Noah Petro, deputy project scientist for the Lunar Reconnaissance Orbiter at NASA's Goddard Space Flight Center told NASA.
"When the moon is farthest away it's known as apogee, and when it's closest it's known as perigee".
One of these partial eclipses is presented here it was captured at 06:32 GMT on 13 September but all three, along with a fourth passage of the Moon close to the edge of the Sun, can be seen in this movie.
A full moon total lunar eclipse will occur on September 27th and last one hour and 12 minutes.
"There's no physical difference in the moon". The total lunar eclipse will mask the moon's larger-than-life face for more than an hour.
To help people better understand this phenomenon, the Winnebago County Conservation Board will be holding a Fall Lunar Eclipse Program instead of their annual Fall Stargazing Program. During total eclipses, the moon doesn't go completely dark; it often turns a reddish hue because it's hit by sunlight bent by Earth's atmosphere, thus earning the name "blood moon".
The rest of the world won't be able to see anything because it will be daytime, though some areas bordering the aforementioned regions may be able to catch something sunrise and sunset.
Space.com reported on just how rare supermoon eclipses are.
Formally beginning at 8:11 p.m., the first noticeable changes will begin at approximately 9:07 p.m. The transformation is expected to be complete by 10:47 p.m. and the red (or "blood") moon should be visible until shortly after midnight. In Europe, Africa and the Middle East, the total eclipse takes place in the wee hours of the morning, after midnight and before sunrise September 28.