Rainbows which are produced by the light of moon are called moonbows. They are very rare because the moon must be bright (near full moon) and low in the sky (less then 42° above horizon), there must be rain in the opposite direction of the moon and the sky behind the moonbow must be dark.
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|Date:||Aug 11, 2017 between 22:58 and 23:33 CEST (=UTC+2h)|
|Instrument:||Sky surveillance camera pointing to north|