@Cryptozeug 8 September 2021 more from that month

There was a time when contrails in the sky were quite normal. Everyone who could afford it flew everywhere. And there was a time when there were almost no planes in the sky, you know what I'm talking about. Now there are more again and that should be a reason to rejoice. But somehow I liked the empty sky better. The picture is slightly exaggerated, of course. But I actually saw one of the planes today.