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A rare celestial spectacle will light up the night sky this weekend. On Sunday night, September 7, there's a rare chance to see an eclipse of a "Blood Moon" when the Moon transforms into a deep, coppery red.
At the same time, the Moon will rise in the same area of sky as the ringed planet Saturn, which will appear as a bright star and make for a remarkable naked-eye pairing. The unique combination has been described as "one for the history books".
Nearly 7bn people - around 85% of the world's population - will have the chance to witness the total lunar eclipse coinciding with a Supermoon. Depending on where you are in the UK, you could see up to 29 minutes of totality - when the Moon fully enters the darkest part of Earth' shadow.
As Earth's shadow falls across the Moon, it will turn rust-red - hence the name, Blood Moon. The distinctive red glow occurs because Earth's atmosphere refracts sunlight, scattering blue light and allowing only warmer colours to reach the lunar surface.
This extraordinary alignment can be viewed safely with the naked eye. However there are some caveats, not least the weather - and viewing times may be more limited in Wales.
The entire 82-minute eclipse - including the penumbral phase (before moonrise) - won't be visible anywhere in the UK. However the second half of the eclipse can be seen in most places from around 7.30pm.
The exceptions are western Scotland and all of Northern Ireland, where only a partial eclipse will be visible. The North Wales Live Whatsapp community for top stories and breaking news is live now - here's how to sign up
Here are some of the key UK timings, as determined by the tracking website Time and Date.
Penumbral phase: 4.28pm (before moonrise) Partial eclipse begins: 5.27pm (before moonrise) Total Eclipse begins: 6.30pm (before moonrise) Maximum eclipse: 7.11pm (about 20 minutes before moonrise) Moonrise: 7.30pm Total eclipse ends: 7.52pm Partial eclipse ends: 8.56pm Penumbral eclipse ends: 9.55pm
The spectacle is best viewed looking east just over the horizon. For this reason, unobstructed views will work best.
East England will have the best views - places like Great Yarmouth will experience nearly 29 minutes of the spectacle. Further west, viewing times will diminish. For example, it will only be visible for 11 minutes in Manchester.
The Time and Date website suggests a full eclipse should be briefly seen in west Wales - but in practice many people here may catch only a partial eclipse.
As always, the best scenes will unfold under clear, dark skies. Some cloud is forecast for North Wales on Sunday evening but more is expected in England, which may compromise some viewing angles.
A full eclipse occurs when the Moon, Sun, and Earth align perfectly, causing the Moon to move into Earth's shadow. All stages of the eclipse will be visible across the easternmost parts of Africa, the Middle East, most of Asia and western Australia.
More lunar spectacles are expected this year: the full Moons of October, November and December are all supermoons, making them appear much larger than usual in the night sky. Sign up for the North Wales Live newsletter sent twice daily to your inbox
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