Bastille Day is observed on July 14, 2017. Bastille Day is the name given in English-speaking countries to the French National Day, which is celebrated on the 14th of July each year. In France, it is formally called La Fête Nationale and commonly Le quatorze juillet. It commemorates the 1790 Fête de la Fédération, held on the first anniversary of the storming of the Bastille on 14 July 1789.
The anniversary of the storming of the Bastille fortress-prison was seen as a symbol of the uprising of the modern nation, and of the reconciliation of all the French inside the constitutional monarchy which preceded the First Republic, during the French Revolution. Festivities and official ceremonies are held all over France. The oldest and largest regular military parade in Europe is held on the morning of 14 July, on the Champs-Élysées avenue in Paris in front of the President of the Republic, French officials and foreign guests. (With material from: Wikipedia)