Visibility III / V
A dim arc stood out in the photo taken from the window at 21:37 [->21:27]. At 21:57 [->21:53] the arc rose above 20 degrees. Had to move out. It was worth going, at 22:55 a spectacle started in the quarter sky, which stretched to the zenith between the northwest and the northeast. In Helsinki, the colors of dim lights are usually not distinguished, but now I thought I sensed the green color in the areas between dim and bright. As the main picture, I tentatively set the situation in the north at 23:20. More later when I go through more than a hundred pictures.
Edit. I completed the image. In addition, it is worth mentioning that the timing of filming in Helsinki's dim show is often based on blindly following curves and online sky cameras. Now you could actually watch the show and pick the best bits from different directions.