Where Does the Green Go at Twilight?

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The absence of green in the twilight sky is attributed to factors such as viewing angle and timing. Observers may miss subtle green hues if not looking closely or at the right moment. Some have reported seeing faint horizontal green trails at dusk, although these are not very intense. The intensity of green in twilight is significantly lower compared to its prominence in rainbows. Understanding these nuances can enhance the appreciation of twilight colors.
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Why is no green color on the sky at twilight??
 
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Maybe you are not looking hard enough or maybe you are not looking at the right time at the right angle. I HAVE seen a horizontal trail of green, although this was at dusk, in the east sky. The stength of this green was not very strong, but it was recognizable.
 
Why is this intensity so low? In the rainbow the green's intensity is much greater.
 
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