I saw that you corrected yourself, but to expand, Nazis pulled from whatever information to create the narrative they wanted. It was a hodgepodge of theories, also including mysticism and even the hollow Earth theory that we live on the inside of the Earth sphere.

Phenology itself was already nearly 200 years old by the time the Nazi party was established. It was already becoming an unpopular idea the 1830s, but it hasn’t stopped it from bouncing around and having people pull from it to this day.

https://ethos.lps.library.cmu.edu/article/id/482/