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Hi Arthur. Allowing for precession of the equinoxes, from the present back to the prehistoric past, the sky would have been essentially the same across the British Isles within about a 5 degree variation from southern England to the north of Scotland. To compute the sky back to 7000BC is asking a lot. It can be done, but most available software only goes back to around 2000BC. It becomes rather academic before then.
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