I want to know the answer to the following question:
When was Elizabeth's Diamond Jubilee?
All the background I'm provided with is that "Moments of sadness for her include the death of her father, aged 56; the assassination of Prince Philip's uncle, Lord Mountbatten; the breakdown of her children's marriages in 1992 (her annus horribilis); the death in 1997 of her son's former wife, Diana, Princess of Wales; and the deaths of her mother and sister in 2002.". Is that enough to answer the question?