On Sunday evening we witnessed a very unusual upside down rainbow pointed out at dinner by Juliette. We googled this and found it to be a circumzenithal arc which is a very unusual phenomenon. We had no rain, just cirrus clouds and a blue sky around 6 pm and watched the arc come and go and then the arc flipped but continued with the colors inverted (red on bottom) in the western sky as the sun was setting for about 30 minutes. It was pretty amazing and wonder if we will see anything like it again in our lifetime.
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