Friday the 13th Full Moon 2019: How and When to See the Micro Harvest Moon Tonight

What's spookier than Friday the 13th? A Full Moon on Friday the 13th. But this will also be a Micro Harvest Moon, the Full Moon closest to the autumnal equinox (the end of summer and start of fall).

Moon NASA 2019
This view of the north polar region of the Moon was obtained by NASA's Galileo camera during the spacecraft flyby of the Earth-Moon system on December 7 and 8, 1992. NASA

What is a Micro Harvest Moon?

A micromoon is the opposite of a "supermoon" and will appear around 14 percent smaller in the sky. This is because the moon is also nearing its apogee, the point in its nearly month-long elliptical orbit at which it's furthest away from Earth. The moon will be at apogee on September 13 at 9:32 a.m. EDT.

Also known as the Fruit Moon, Barley Moon or the Mid-Autumn Festival Moon, the Harvest Moon acts as a light for farmers who need to work later. According to NASA, usually the Full Moon rises an average 50 minutes later each night, but for the few nights around the Harvest Moon, it seems to rise at nearly the same time. In the U.S., this is normally 25 to 30 minutes later.

Both these types of moons together are rare.

According to NASA, the Moon will be full early Saturday morning, September 14, 2019. It will appear opposite the sun at 12:33 a.m. EDT. It will appear full for three days around this time, from Thursday night through Sunday morning.

According to Farmer's Almanac, a Full Moon on Friday the 13th is not common as it can only happen between once to three times a year. The last time there was a Full Moon on Friday the 13th was January 2006. The next one will be August 2049.

But according to Dr. Robert Massey, deputy executive director at the Royal Astronomical Society, this isn't technically a rare phenomenon: "This is an odd one as the Moon being slightly (7 percent) smaller than average is not a particularly significant phenomenon, and I don't know any astronomers who call it a 'micro moon,'" he tells Newsweek.

How can I watch the Harvest Moon?

As with other nights when you look at the moon, you simply need to be able to see it in the sky, so not have it hidden by buildings or hills, or by clouds, says Dr. Massey. "The time of Full Moon is 04:32 a.m. GMT on 14 September, so from the U.S, that would be 23:32 p.m. standard time on 13 September.

"On September 14, in the northern hemisphere, the Moon will be due south at local midnight, so for people on daylight saving time that means 01:00 a.m."

Currently, there are no live streams announced by NASA or YouTube.