The rare sight of a green ray was captured during sunset in northern Spain.

The footage, captured on June 14, shows the moment a green flash appears in the horizon as the sun sets in Donostia.

'Green ray' or 'Green flash' is an atmospheric phenomenon that occurs shortly after sunset or before sunrise, in which a green line is visible on the horizon.

The phenomenon is visible any time the sun rises or sets on a clear, unobstructed and low horizon. 

The filmer writes: ''Throughout my long life, I have only been able to contemplate this phenomenon twice.

''If you are lucky enough to share that unique moment with another person, both of you will inevitably fall in love forever. At least that's what the legend says.''

Green ray and sunset in Donostia. Green flash, or green ray, is an atmospheric optical phenomenon that occurs shortly after sunset or shortly before sunrise, in which you can see a green dot, usually by one or two seconds, on the position Have you observed the sun when it sets on the horizon of the sea? Yes, without a doubt, have you followed it until the top of the disc
disappear brushing the horizon line? It is very possible. But have you noticed the phenomenon that occurs at the precise moment when the radiant star throws its last ray (...)? It will not be, as it could be presumed, a red ray that will hurt the retina of your eyes, but it will be a green ray, but a wonderful green, a green that no
painter can get on his palette. (...) If there is green in Paradise, it can not be more than this green, which is undoubtedly the true green of Hope. "Jules Verne
Throughout my long life I have only been able to contemplate this phenomenon twice.
If you are lucky enough to share that unique moment with another person, both of you will inevitably fall in love forever. At least that's what the legend says.