One needs to be present below the equator to see both the sun and moon in the sky at once, as per space.com.
The moon's orbit around the Earth is not a ideal circle, meaning the distance between the two bodies grows and shrinks as the lunar planet plods eternal laps around us. This will be the first and last supermoon of the year.
The moon's average distance from the Earth is approximately 238,000 miles.
The good news is you can still see the (mostly - 99 percent) full moon Saturday and Monday.
Unlike the total solar eclipse, there are no risks of going blind if you stare directly into the moonlight, which is technically a reflection of the sun's light.
A supermoon can appear as much as 14% bigger and 30% brighter than when a full moon is at its farthest distance from Earth, NASA said.
The moon will be completely full on Sunday, December 3 at 3:45 a.m. EST, but will look full for a day before and after.
At that point, it may appear a little bigger and brighter than usual.
A Supermoon sets over the front range of the Rocky Mountains Colo. Nov. 15 2016. US Air Force Dennis Hoffman Public Domain
Most astronomers suggest watching the supermoon right after sunset and into moonrise, and minutes before the next sunrise as well.
When the supermoon is viewed low on the horizon, it appears huge. In fact, the change in the moon's apparent size throughout its orbit is imperceptible to the unaided eye.
What's the best way to photograph the supermoon?
Considering that a full moon can be covered with a fingernail, even a 7% larger moon may not look that much bigger.
If you're using a DSLR, NASA's senior photographer Bill Ingalls recommends that you use the daylight white balance to adjust for the sunlight being reflected off the moon.
Do I need special glasses to watch the supermoon?
To get an original shot, Ingalls suggests taking a picture that puts the moon in context of a local landmark, something that gives your photo a sense of place.More news: 4.4-Magnitude Earthquake Hits Near Dover, Del. - Felt Along East Coast
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