We all know that when it comes to a rainbow, there's red and yellow and pink and green, purple and orange and blue.

But when George Rankin saw a rainbow, this didn't prove to be the case.

Whilst enjoying a meal in Seatown, George spotted a red rainbow, and said: "Our lovely meal at the Anchor Inn was interrupted by this remarkable vision which lasted only a few minutes."

A red rainbow, which occurs at sun set or sun rise, is rare because of the conditions it appears in.

The low angle of the sun means there is a longer distance for its light to travel through the atmosphere, which creates shorter wavelengths of light, such as blue, green and yellow to be scattered, leaving red as the primary colour.

In a lower light environment such as a sun set, where the phenomenon most often forms, the monochrome rainbow can leave a highly dramatic effect, as snapped by George.

Despite looking to be horizontal, red rainbows still form a full arc, but this is not always the case because of the clouds.

Shadows of clouds near the setting sun stretched across the sky muffled most of the rainbow, leaving one almost horizontal strip.