Night and Day is a novel by Virginia Woolf, set in Edwardian London. It focuses on the relationships and daily lives of two main female characters, Mary Datchet and Katharine Hilbery. From different backgrounds (Katherine is the the granddaughter of a celebreated poet; Mary is the daughter of a country vicar), and not interacting that much in the book, it is through these two that Woolf explores issues such as women's suffrage, and marriage. Specifically whether marriage is needed to achieve happiness.