[Wuli]

I am imaging a SciFi story based on such a planet and what a history of sentient life on it may be, with a 15,000 year cycle of likely slowly changing but definite climate change going on, as the plant moves at times closer to its suns and later moves away from them. It could entail long 15,000 year cycles of the uprooting and building of civilizations. Just some wild Friday morning day dreaming.

[Red Badger]

Isaac Asimov beat you to it by about 80 years..........

https://en.wikipedia.org/wiki/Nightfall_(Asimov_novelette_and_novel)

http://www.astro.sunysb.edu/fwalter/AST389/TEXTS/Nightfall.htm