An arc of spectral colors, usually identified as red, orange, yellow, green, blue, indigo, and violet, that appears in the sky opposite the sun as a result of the refractive dispersion of sunlight in drops of rain or mist [1]

Nothing spectacular about this. I was out washing the car on Sunday morning, and in between bouts of getting soaked by passing rain showers and attacked by my cat, I managed to take the photo below. I was struck by the fact that the rainbow arcs from one house to another, and also by the geometric contrast with the overhead phone lines. Slightly processed, as it was from my 'phone. Small reflected 'bow barely visible above.

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