The Question and Answer section for Life of Pi is a great resource to ask questions, find answers, and discuss the novel.
The Patels sell the zoo and all its animals, but it takes a year to complete the process of moving the animals. On June 21st, 1977, the Patels board the Tsimtsum and leave India.
From the text:
It was enoiugh to scare the living vegetarian daylights out of me. Mother bundled us out. We were in hysterics. She was incensed.