TIME

Why We Don’t Know the Exact Moment Queen Elizabeth’s Reign Began

On Sept. 9, 2015, she will become the longest-reigning British monarch in history

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On Wednesday, Queen Elizabeth II will become the longest-serving monarch in British history. A royal spokesperson told Maclean’s that the record-breaking moment at which she surpasses Queen Victoria’s 23,226 days, 16 hours and 23 minutes is set to happen around 5:30 p.m. local time.

That “around” is puzzling, given the precision of royal records. The reason for the approximation is that there is no gap between the periods of rule of British monarchs. The second one dies, the next is in charge. So, while Queen Elizabeth II’s coronation didn’t come until mid-1953, she became queen the very moment her father, King George VI, died, on Feb. 6, 1952.

Queen Elizabeth II’s Life in Photos

[time-brightcove not-tgx=”true”] 1926. The Duke and Duchess of York (later King George VI and Queen Elizabeth, the Queen Mother) pictured with their daughter (later, Queen Elizabeth II) as she sleeps in a precious christening robe, which has been used in the Royal Family for generations. George's Snapshot Royal Family Coronation of King George VI of England British Royalty, 1940, Princess Elizabeth (later Queen Elizabeth II), right, broadcasting with her sister Princess Margaret alongside Royal Thespians Princess Elizabeth Princess Elizabeth Elizabeth II [RF: England RF] Princess Drives Ambulance Princess Elizabeth and Prince Philip Wedding Day November 1947 Wedding Of The Princess Elizabeth (queen Elizabeth Ii) And Prince Philip (duke Of Edinburgh) On 20th Nov 1947. Their Royal Highnesses Photographed At The Palace After The Wedding Ceremony. 1947 Princess Elizabeth With Baby Prince Charles MARCH 23RD 1950, LONDON, PRINCESS ELIZABETH GREETING WINSTON CHURCHILL AT GUILDHALL Royal Mourners Three Queens Royal engagement Duke of Edinburgh taken to hospital The Coronation Of Queen Elizabeth Ii 1953 Queen Elizabeth at a Picnic with the Royal Family Young Prince Charles, Britain West Germany - Royalty - Queen Elizabeth II in Bonn Prince Philip and Queen Elizabeth Aboard Airplane Queen Elizabeth II retrospective QUEEN ELIZABETH II SILVER JUBILEE, LONDON, BRITAIN - 1977 Prince Charles and Princess Diana After Royal Wedding Various BUCKINGHAM PALACE ON THE EVE OF PRINCESS DIANA'S FUNERAL, LONDON,  BRITAIN - 05 SEP 1997 Queen And Prince Philip Cholmondeley THE ROYAL WEDDING OF PRINCE CHARLES TO CAMILLA PARKER BOWLES, WINDSOR, BRITAIN - 09 APR 2005 Royal Wedding - Buckingham Palace Queen Elizabeth II and Prince Philip Diamond Wedding Anniversary at Broadlands in Hampshire, Britain - 18 Nov 2007 File photograph shows Britain's Queen Elizabeth touring the Royal London Hospital in east London Britain's Queen Elizabeth and Prince Philip wave during a pageant in celebration of the Queen's Diamond Jubilee in London Britain Queen's 90th In this undated photo released by Buckingham Palace on June 10, 2016, Britain's Queen Elizabeth II and Prince Philip, the Duke of Edinburgh, pose for a photograph to mark the Queen's 90th birthday in Windsor. The queen, Britain’s oldest and longest-reigning monarch, turned 90 on April 21. She usually celebrates her birthday privately, but this year’s milestone served as the jumping off point for weeks of celebrations.

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The challenge for anniversary-minded royal-watchers is that King George died in his sleep. It was widely reported in 1952 that he was found dead by a servant around 7:30 in the morning—meaning that he died, and Elizabeth’s reign began, at some unremarked-upon moment prior to that time.

In fact, it wasn’t until later that day that the new queen—who was on a trip to Africa—even found out about her father’s death and her subsequent change in status.

“It was not until early in the afternoon that Philip got the news (by telephone from a local newspaper) that changed their lives,” TIME reported. “He sent an equerry to call London for confirmation, then gently led his wife down to the river’s edge and told her that her father was dead. The Queen returned to the lodge on her husband’s arm, shaken but in full command of herself.”

As she came to terms with her new role and began to make her way home, the article continued, the signifiers of her rule snapped into place:

But even as the shocking news interrupted the smooth flow of past into future, a new present was making itself felt. The King was dead, but the Crown remained, and it must be fitted promptly to a new head. In London’s High Court, King’s Counselor Harold Shepherd had just finished cross-examining a defendant when the news came. The court adjourned. Ten minutes later, the lawyer resumed the floor as Queen’s Counselor. Painters at another London court set to work painting out the sign “King’s Bench” and replacing it with “Queen’s Bench.” “Who goes there?” sang out the sentries in a traditional nightly ritual at the Tower of London. “The Queen’s Keys,” came the new answer. There were a multitude of adjustments to be made in a nation where everything is run in the name of the sovereign. Six months hence, for instance, a new coinage would appear bearing a likeness of the Queen, facing, in accordance with tradition, in the opposite direction from her predecessor. But first, there was the complicated procedure of establishing without question the sovereign’s identity and right to sit on the throne.

King George’s death caught Parliament in the midst of one of the fiercest debates in its recent history, and instantly stilled that debate. On Wednesday afternoon, the House of Commons met briefly to hear the news officially announced by the Prime Minister, and then recessed. The government ministers, together with leaders of the Opposition, the Privy Council and other prominent Britons, had a more important meeting to attend: the meeting of the Accession Council, the oldest governmental convocation in England, 192 of whose members gathered at St. James’s Palace to determine formally the new sovereign’s accession and title. The council’s task was complicated by the fact that Elizabeth, the first British monarch since George I to be out of the country when her predecessor died, was still 4,000 air miles from London and hence unavailable to proclaim, as required, that she is a Protestant. Nevertheless, in two hours, the councilors decided that she was indeed the rightful sovereign, and at 7 p.m. the House of Commons met again to hear their report and swear allegiance to the new Queen. Then they adjourned. That night London was dark and still.

Read more from 1952, here in the TIME Vault: Elizabeth II

See Every TIME Cover Featuring Queen Elizabeth II

Apr. 29, 1929 Mar. 31, 1947 Feb. 18, 1952 Jan. 5, 1953 June 29, 1959 May 3, 1976 June 3, 2002 - TIME Europe Apr. 17, 2006 May 14, 2007 June 4, 2012 The Queen Elizabeth II 1926-2022

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