blood supermoon
The moon during a total lunar eclipse appears red or copper colourJohannes Schedler/Panther Observatory/Nasa

On 27 September, the Earth will experience a rare blood supermoon lunar eclipse. It is the first time in 33 years that we will get to witness such an event as the moon reaches its closest point to the Earth and coincidentally coincides with the almost perfect alignment of the moon, earth and sun, with our planet blocking the light from the star in our solar system and ultimately given the moon a red tint.

The moon will appear as if its diameter has expanded by 14% and will also be brighter. There have only been five examples of the lunar display since the beginning of the 20th century when they came about every 18 years –1910, 1928, 1946, 1964, and 1982 – until a 33-year break prior to the upcoming one.

Due to the rarity of the astronomical phenomenon, it's something you won't want to miss. However, if you're UK based, don't rely on the weather to be clear. Although clear skies are anticipated for 27 September, things can – and probably will – change.

Fear not though, Slooh has you covered. The online observatory will be doing a live broadcast of the event. You can watch it on its website on the day. Additionally, Nasa will provide a live stream. But the space agency is more catering for the US with a midnight kick-off. In the UK the blood supermoon will be at its peak at around 2.45am.