In light of the afternoon's accusations and confessions, what event had Nick forgotten and what might it symbolize in the context of the novel? The Great Gatsby

Tom and Daisy's anniversary, symbolizing the decline of their marriage
The 4th of July, symbolizing the birth of the American Dream
His mother's birthday, symbolizing the lack of nurturing in the novel
His 30th birthday, predicting a transition from the carefree 20s to a more complex 30s

The 4th of July, symbolizing the birth of the American Dream