One Day

One Day is a novel by David Nicholls, published in 2009. A couple spend the night together on 15 July 1988, knowing they must go their separate ways the next day. The novel then visits their lives on 15 July every year for the next 20 years. The novel attracted generally positive reviews and was named 2010 Galaxy Book of the Year. Nicholls adapted his book into a screenplay for a feature film, which was released in 2011. A television series was produced by Netflix in 2024.