Ah, sorry. As @Mark Chance said, it's Finnish.
(Including Lapland, where they actually use reindeer as draft animals.)
Edit to add: No, I'm not Finnish--I'm old.
I remember seeing Sputnik pass overhead in the late 1950's (low orbit, my eyesight started out that good) after the Register-Guard published instructions about where and when to look to the sky to see it. I remember the atrocities at the 1972 Munich Olympics.
I remember a TV clip about Santa in Lapland, in which his Finnish name was used. That was years ago, but they haven't changed the name they use for him.
I didn't mean to break anyone's immersion (but I do have a bit of trouble taking Santa quite as seriously as some other things).
That's cool. Using a cultural name actually makes for a better entry in my thinking. It was the lack of explanation that lost the effect is all.
It's a nice writeup.