Nocturnal Rainbows 

Blue and red lights from a police car that are easiest seen an night.

It’s time to get out of here, I see nothing here except the nocturnal rainbows from the 5 0!

Nocturnal Rainbows by Larry The Robot Maker August 29, 2019

nocturnal rainbow 

A rainbow that occurs very rarely at night when it rains on a full moon. This is rare because the moon is not as bright as the sun.

-Dude were you looking outside last night.
-No why.
-There was a sick ass nocturnal rainbow, it was really faint tho.

nocturnal rainbow by The Capital-ᙠ August 2, 2016