One Day is a novel by David Nicholls, published in 2009. Each chapter covers the lives of two protagonists on 15 July, St. Swithin's Day, for twenty years. The novel attracted generally positive reviews, and was named 2010 Galaxy Book of the Year. Nicholls adapted his book into a screenplay; the feature film, also titled One Day, was released in August 2011. Writing in The Times, John O'Connell writes, "For, in spite of its comic gloss, One Day is really about loneliness and the casual savagery of fate; the tragic gap between youthful aspiration and the compromises that we end up tolerating. Not for nothing has Nicholls said that it was inspired by Thomas Hardy." A critic in thelondonpaper observes that One Day "may be a love story, but it’s no fairytale: Nicholls doesn’t shy from the harsh side of growing up, the disillusionment, regrets, and random cruelty of life." According to Jonathan Coe (Guardian Books of the Year 2009), "It's rare to find a novel which ranges over the recent past with such authority, and even rarer to find one in which the two leading characters are drawn with such solidity, such painful fidelity, to real life."