The left hand of darkness Ursula K Le Guin

I'll make my report as if I told a story, for I was taught as a child on my homeworld that Truth is a matter of the imagination. The soundest fact may fail or prevail in the style of its telling: like that singular organic jewel of our seas, which grows brighter as one woman wears it and, worn by another, dulls and goes to dust. Facts are no more solid, coherent, round, and real than pearls are. But both are sensitive.

The story is not all mine, nor told by me alone. Indeed I am not sure whose story it is; you can judge better. But it is all one, and if at moments the facts seem to alter with an altered voice, why then you can choose the fact you like best; yet none of them is false, and it is all one story.

It starts on the 44th diurnal of the Year 1491, which on the planet Winter in the nation Karhide was Odharhahad Tuwa or the twenty-second day of the third month of spring in the Year One.