The Swedes came up with the expression first and I assume the Danes thought that sounded really scary and decided to name the most stressful time of day after it.
In all of Scandinavia twilight is seen as the most magical time of day. That's why Scandinavian horror and fantasy is sometimes called Scandinavian Twilight. It's not named after the Twilight books/movies but rather Scandinavian folklore.
See more of Sweden Denmark Dog Christiania Wolf
15th of January