When does Mr. Chips die in Goodbye, Mr. Chips?

Goodbye Mr. Chips tells the story of Mr. Chipping, a beloved school teacher at the Brookfield School, a boarding school for boys.
Mr. Chips dedicated his life to his students, and after teaching at the school for over sixty years, he thinks about his students on his death bed. The visitors that are gathered around him comment about the lonely life they think that he had led, but they do not realize that Mr. Chips was well connected with his students.
In his final moments, he hears the boys he taught singing more beautifully than anything he's ever heard, and their spirits are with him in his final moments. We understand that his students have given him a sense of purpose and fulfillment, and he dies in peace in November 1933 at the age of 85.