That Day

Why was the night the Titanic sank so dark? What was the bright star outside Van Gogh's window? What did Song dynasty astronomers see over Kaifeng in 1054? That Day is a collection of stories about real moments in history, each with a question that only the sky can answer. HOW IT WORKS • Read the puzzle: a short scene from history, and a question. • See the sky: the real sky above that place at that minute, calculated on your iPhone. Look around, follow the hints and move time forward or back....