A ceremony is an event of ritual significance, performed on a special occasion. The word may be of Etruscan origin.

A ceremony may mark a rite of passage in a human life, marking the significance of, for example:

Sometimes, a ceremony may only be performed by a person with certain authority. For example, the opening of the United Kingdom Parliament is presided over by the Sovereign (Her Majesty Queen Elizabeth II). A captain or a higher-ranked naval officer usually supervises the naming and launching of a warship. A wedding is performed by a priest or a Civil Celebrant, as in Australia. The President of the United States is customarily sworn in by the Chief Justice of the United States, and the British sovereign is always crowned by the Archbishop of Canterbury.

Other, society-wide ceremonies may mark annual or seasonal or recurrent events such as:

Other ceremonies underscore the importance of non-regular special occasions, such as:

In some Asian cultures, ceremonies also play an important social role, for example the tea ceremony.

Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, PC, FRS, née Roberts (born 13 October 1925) is a British politician and the longest-serving (1979–1990) British prime minister of the 20th century, and the only woman ever to have held the post. A Soviet journalist nicknamed her the "Iron Lady", which later became associated with her uncompromising politics and leadership style. As prime minister, she implemented conservative policies that have come to be known as Thatcherism.

Originally a research chemist before becoming a barrister, Thatcher was elected Member of Parliament (MP) for Finchley in 1959. Edward Heath appointed her Secretary of State for Education and Science in his 1970 government. In 1975 Thatcher defeated Heath in the Conservative Party leadership election and became Leader of the Opposition, as well as the first woman to lead a major political party in the United Kingdom. She became prime minister after winning the 1979 general election.

After entering 10 Downing Street, Thatcher introduced a series of political and economic initiatives to reverse what she perceived as Britain's precipitous national decline. Her political philosophy and economic policies emphasised deregulation (particularly of the financial sector), flexible labour markets, the privatisation of state-owned companies, and reducing the power and influence of trade unions. Thatcher's popularity during her first years in office waned amid recession and high unemployment, until economic recovery and the 1982 Falklands War brought a resurgence of support, resulting in her re-election in 1983. Thatcher was re-elected for a third term in 1987, but her Community Charge (popularly referred to as "poll tax") was widely unpopular and her views on the European Community were not shared by others in her Cabinet. She resigned as Prime Minister and party leader in November 1990, after Michael Heseltine launched a challenge to her leadership.

The Emperor of Japan is "the symbol of the state and of the unity of the people" according to the 1947 Constitution of Japan, which dissolved the Empire of Japan when it was adopted by the Postwar Japanese government. He is a ceremonial figurehead under a form of constitutional monarchy and is head of the Japanese Imperial Family with functions as head of state. He is also the highest authority of the Shinto religion as he and his family are said to be direct descendants of Amaterasu.

The Emperor is called the Tennō (天皇) in Japanese, literally meaning "heavenly sovereign". He is also referred to in English as the Mikado (帝) of Japan. Currently the Emperor of Japan is the only remaining monarch in the world reigning under the title of emperor.

The Imperial House of Japan is the oldest continuing hereditary monarchy in the world. In Nihon Shoki, a book of Japanese history finished in the eighth century, it is said that the Empire of Japan was founded in 660 BC by Emperor Jimmu. The current emperor is His Imperial Majesty the Emperor Akihito, who has been on the Chrysanthemum Throne since his father the Showa Emperor (Hirohito) died in 1989.

Aaron Copland ( /ˌærən ˈkoʊplənd/; November 14, 1900 – December 2, 1990) was an American composer, composition teacher, writer, and later in his career a conductor of his own and other American music. He was instrumental in forging a distinctly American style of composition, and is often referred to as "the Dean of American Composers". He is best known to the public for the works he wrote in the 1930s and 1940s in a deliberately more accessible style than his earlier pieces, including the ballets Appalachian Spring, Billy the Kid, Rodeo and his Fanfare for the Common Man. The open, slowly changing harmonies of many of his works are archetypical of what many people consider to be the sound of American music, evoking the vast American landscape and pioneer spirit. However, he wrote music in different styles at different periods of his life: his early works incorporated jazz or avant-garde elements whereas his later music incorporated serial techniques. In addition to his ballets and orchestral works, he produced music in many other genres including chamber music, vocal works, opera and film scores.