21_december.png

Links
- https://www.iap.uni-bonn.de/nqo/en/nqo-images/christmas-calendar/calendar-2022/21_december.png/image_view_fullscreen
- https://www.iap.uni-bonn.de/nqo/en/nqo-images/christmas-calendar/calendar-2022/21_december.png/@@download/image/21_december.png