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Aircraft smoke trails during airshows, high altitude contrails and not only... The only rule is that they have to be aircraft related.
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Friday, 21st December, 2012 (GMT)
Friday, 28th December, 2012 – Thursday, 3rd January, 2013 (GMT)
Friday, 4th January, 2013 – Thursday, 10th January, 2013 (GMT)
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