It is sometimes even observed in combination with a double rainbow.

And, what about double rainbows - how does that happen?

A double rainbow is a phenomenon in which two rainbows appear.

Alexander's band, the dark region between the two bows of a double rainbow.

There was rain, thunder and lightning, even a double rainbow in the evening sky.

Before she had finished hanging out the clothes, there was a glorious double rainbow across the sky.

There is a sudden rain and a double rainbow.

A new star shone in the sky and a double rainbow was sighted nearby.

Just outside of Talkeetna, we flew under an immense double rainbow.

A double rainbow appeared at his birth, and a new star shone in the firmament.