The optical illusion is caused by a regular rainbow and a sunset happening at the same time.
Flat rainbow Incredibly rare flat rainbow spotted in Devon after
Stunning pink rainbow spotted in the skies over Bristol and beyond
BRONCO☆Ace Of Sunlight UK Island Pink Ri - 洋楽
A rare pink rainbow was spotted in the sky over Bristol, England
Stunning pink rainbow spotted in the skies over Bristol and beyond - Bristol Live
Pink rainbows light up the sky over England
PICTURES: Rare pink rainbow lights up the sky over Dorset
Un arc-en-ciel rose bonbon très rare illumine le ciel en Angleterre
Stunning 'rainbow clouds' spotted over the North East - Chronicle Live
Flat rainbow Incredibly rare flat rainbow spotted in Devon after
肖文明(@Bo9rB) / X