Procurando por um livro de ficção científica: single novel, slow rotation alt earth. Protagonista viaja entre clãs / grupos para uni-los

Isso me lembra muito o Oeste de janeiro . Lentamente girando planeta, manchado com culturas diferentes, nômades de pastagens de quem nosso herói emerge. Culturas próximas aos pólos estão mais avançadas.

Da revisão vinculada:

This is the beginning of Knobil's life story -- not so much a heroic quest as a series of fateful accidents that thrust him from place to place and tribe to tribe across the planet Vernier. This story has all the elements of historical fantasy, and yet the setting is a science fictional world, settled two thousand years ago by human colonists whose technology has been lost. Vernier's rotation is so slow that daytime inches around the planet, taking centuries to complete one revolution. And as the sun moves across the land, the entire ecosystem must travel with it.

Vernier is divided into twelve longitudes named January to December. Knobil was born in the west of January, and by the time he is a very old man, the grasslands have entered June.

Publicado em 1989 no final do tempo citado, mas ainda é possível.

Existe uma resposta para uma pergunta muito semelhante aqui embora o consulente estivesse cético e nunca o aceitasse.

The fire and ice stuck me as incongruous, then I remembered "Catch the Sun", a short story by Barry Longyear that I read many years ago in his book of short stories "It Came from Schenectady", published in 2001, and originally published in Isaac Asimov's Science Fiction Magazine, November 1980.

Space travellers encounter low-tech nomads living on a slowly rotating planet. The tribe moves constantly towards the sun, staying in the narrow band of habitable temperatures between the sunny side and the dark side. As I recall, someone falls behind and is rescued from the ice that endlessly chases them.

They also discover a second band living on the other side, constantly running from the sun, which ignites the world behind them....

O mundo é redondo por Tony Rothman

O mundo também é enorme e acabou se revelando oco.