When Does "Klaus" (2019) Take Place?
"Klaus" is a historical fiction comedy animated film written by Sergio Pablos with Jim Mahoney and Zach Lewis that released November 8th, 2019. So when is "Klaus" set?
It takes place in the year:
We know this because the story takes place in Smeerensburg, loosely based on the real-world settlement of Smeerenburg which was founded in 1619 AD and abandoned around 1660 AD.

16?? AD or 18?? AD
We know this because the story takes place in Smeerensburg, loosely based on the real-world settlement of Smeerenburg which was founded in 1619 AD and abandoned around 1660 AD.
The "Royal Postal Academy" as part of the postal service only fits with Scandinavian countries having royal families until 1944 AD.
HOWEVER, when the first little boy to get a present is taught the history of the Ellingboes and the Krums eternal family feud the matron of the Krum clan tells him, "There was the hundred-day brawl of '45." while the leader of the Ellingboe clan tells a little girl about "The great mooning of '86!" At this time, the boy and girl are shown artwork depicting the forever feud. None appear to be in any styles from the twentieth century or twenty-first century, the earliest appears to be from Stone Age, and the latest appears to be from the nineteenth century.
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