describe the clock incident

It rains on the day that Gatsby and Daisy are to meet, and Gatsby becomes extremely apprehensive. The meeting takes place at Nick's house and, initially, their conversation is stilted and awkward. They are all inexplicably embarrassed; when Gatsby clumsily knocks over a clock, Nick tells him that he's behaving like a little boy. Nick leaves the couple alone for a few minutes. When he returns, they seem luminously happy, as though they have just concluded an embrace. There are tears of happiness on Daisy's cheeks.

Nick describes the restless Gatsby as "running down like an over-wound clock." It is significant that Gatsby, in his nervousness about whether Daisy's feelings toward him have changed, knocks over Nick's clock: this signifies both Gatsby's consuming desire to stop time and his inability to do so.