The Age of Miracles by Karen Thompson Walker

The Age of Miracles is about the end of the world, both in a macro and micro sense. The Earth's rotation begins to slow, stretching the length of days and nights and warping the planet's gravity. But the potential of astronomical apocalypse mostly sets the stage for a personal one. For 11-year-old Julia, the familiarity of her world is dissolving with the sudden arrival of adolescence, the complications of middle school friendships, and the decaying of her parents' marriage. These things are exacerbated by the novel's science fiction, but the conflicts remain grounded in a very human reality.