NASA says the best time to watch the Full moon is Saturday, September 14th at 12:33 a.m. This lunar event is so rare that it hasn't happened for almost 20 years. This rarity hasn't happened since a full moon appeared on October 13, 2000.
A full moon on Friday the 13th is approaching at the end of this week, almost.
The full moon on Friday will also be a harvest moon, which is the full moon closest to the autumnal equinox.
So while keeping an eye out for werewolves, goblins and ghosts, check out the full moon!
While Friday the 13 is usually considered a day of bad lucky, you may be fortunate enough to view the Harvest Moon, especially if you try in the middle of the night. Plus it's going to be a Full Moon and not only that, it's going to be a Full Harvest Moon.
It's a full, micro, harvest moon on Friday the 13th
In this file photo, the Reid family harvest their wheat crop under a harvest moon near Cremona, Alta., Monday, Sept. 28, 2015.
This means the Harvest Moon precedes the Autumn Equinox by just nine days this year.
"What sets this upcoming full moon apart from the others is that farmers, at the peak of the current harvest season, can work late into the night by this moon's light", explains the almanac.
The appearance of a Full Moon on the unlucky date of Friday the 13th only happens once every 20 years.
Mr Rao said: "To add to this Full Moon "madness", this upcoming Full Moon very almost coincides with apogee - that point in its orbit which places it at its greatest distance from the Earth: 252,100 miles away".
"The Moon was more than 30,000 miles closer and was accordingly branded a "Supermoon". As a result, the full moon this week will appear about 14 percent smaller.