Usually, the Queen's speech is aired at 3 pm on Christmas Day, typically lasting around 10 minutes. The tradition of giving a speech on Christmas day was begun by Queen Elizabeth II's grandfather, George V in 1932. The Queen gave her first festive speech on 25th December 1952 at a slightly later time of 3:07 PM. Originally, the speech was only aired on the radio, but since 1957, it has also been broadcast on television.

George V's first speech was written by the novelist Rudyard Kipling. Since then, the reigning monarch has had control over the theme and direction of the speech, although it usually chronicles that year's major events. In her first speech, the Queen thanked people for their loyalty and affection during the first months of her reign and promised to keep the tradition of the annual speech. Since 1959, the Queen has prerecorded her speeches to relieve the pressures on herself and the camera crew on Christmas Day.

The Queen has spoken about a variety of topics, including the importance of spiritual and family values (1958), the birth of Prince Andrew (1960) and Prince Edward (1964), women in society (1966), Martin Luther King, Jr.'s assassination (1968), children and young people (1979), the Falklands War (1982), faith in communities (2000), the 11th September attacks (2001), the bombings in London (2007), the King James Bible (2010), victims of the Grenfell Tower fire (2017), the COVID-19 pandemic (2020) and the death of the Duke of Edinburgh (2021).

More Info: en.wikipedia.org