Stargazers will be able to see the biggest and brightest "supermoon" in the sky in living memory.
- What is a supermoon?
The supermoon is when the moon will appear 14 per cent larger and 30 per cent brighter than normal.
The so-called supermoon is the closest full moon of the year and it will be closer to Earth than it has been since 1948.
- When will it happen?
The once-in-a-lifetime sight takes place on Monday 14 November.
It will be the second supermoon of the year, the first having already happened on October 16, and the third expected on December 14.
At 11.23am UK time on Monday the gap between the Earth and the moon will close to its shortest point, known as "perigee" - a distance of 221,525 miles (356,510 km).
Sky watchers in the UK will have to wait a little longer before the full moon emerges in all its glory shortly before 5pm.
- Where is best to see it?
If the sky is clear and you have a view to the south, the moon should be visible.
If you can find a secluded spot with low levels of light pollution, you may get a better view.
- What can you expect to see?
On top of the moon's bigger than usual size, they will then be treated to an additional "low-hanging moon" effect.
This is an optical illusion caused by the moon being close to the horizon, where it can be measured against familiar objects such as trees and houses.
The event has been described as "undeniably beautiful" by American space agency Nasa and nothing will match it until 25 November 2034.