midlifecrisis
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I haven't a clue but you say UK so it has to be after 1801 so I'll say something random like 1820...
Well, that's why the orange and reds are the colours of sunset... They bend/refract more than the other colours, so end up at the bottom.Light scattering from molecules in the air , I can't remember it all exactly but I think that's the gist of it.