Many people are reflecting on where they were when the news of Diana Princess of Wales's death was announced.
For me it's easy.
I was in bed at home and woke when the 'pager', which Sky News insisted I carry at all times, buzzed into life. Bleary eyed, I reached for it and read the code words I half expected "Royal Down".
All broadcasters had for some time prepared themselves to respond to the Queen Mother dying. She seemed eternal but was then in her 97th year.
Seconds later, my mother came into the room and told me what she had just seen on the television.
Her life had seemed agonisingly complicated and public in the months preceding this jolt, but this development was beyond all fathom.
As Sky's Commentator of National Events, it was not immediately clear what my role might be. After all, the marriage between Prince Charles and Diana had been over for some time and it didn't seem likely that a Royal Ceremonial Funeral would follow.
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Diana's final hours
My instinct (how wrong I was), leant towards a Spencer family funeral. The only part of this that arguably did transpire was that the Spencer's retained a strong lead in presence and style and, after 10 fraught days, Diana found her eternal rest on the island in the lake of her family home.
Diana was a phenomenon and so, as frequently happens in Britain, events took hold of protocols and made them bend to a ferocious public expectation and utility.
By the time I was sat in the studio at Osterley at 9am on the morning of the funeral - the audible apex to a gargantuan team effort by Sky - the United Kingdom had writhed through a heart attack of sorts.
In the middle of this wounded lion's cage stood the courtiers at Buckingham Palace, who had zero precedent to draw on and must have had to fumble in search of the right solution.
While this evolved, the newly elected and exceptionally popular Government had a strong influence, the media's views were everywhere and Diana's family must have fought for space.
The Armed Forces were put on standby but, for what?
Lieutenant Colonel Malcolm Ross was the Queen's principal adviser on ceremonial matters. We had both served in the Scots Guards and I'm sure his training must have helped. His team, in what is called the Lord Chamberlain's Office, worked through the nations emotions to fix upon a ceremonial and an Order of Service.
Any family that faces bereavement, especially a shock one, must recognise that there can be difficulties. I'm sure errors of approach must have been made by all sides, many might have been disappointed by stands taken or ideas posed but, in the end, the book of protocol produced a unique ceremony for a unique person.
The template for Diana's funeral, at Westminster Abbey, was indeed that held for the ageing Queen Mother but marching servicemen were replaced by representatives of countless charities and great organisations, which this great icon of a mother had championed.
And there in the centre, where in 1920 for the State Funeral of the Unknown Warrior the King Emperor, George V walked, were Diana's two boys. Men now, but boys then. And the impression upon crowd and world was intense.
Image:July 1962: A family album picture of Lady Diana Spencer at Park House, Sandringham, on her first birthday
Image:1968: Diana with her brother Charles, Lord Althorp (Earl Spencer)
Image:1970: Diana during a summer holiday at Itchenor, West Sussex
Image:1974: Diana with Souffle, a Shetland pony, at her mother's home in Scotland during the summer holidays
Image:Oct 1980: Diana alongside Camilla Parker-Bowles at Ludlow Races where Prince Charles was competing
Image:Oct 1980: Diana watches Prince Charles finish second in the club amateur riders handicap steeplechase at Ludlow racecourse
Image:Sept 1980: Diana, aged 19, at the kindergarten in St George's Square, Pimlico, London, where she worked as a teacher
Image:Nov 1980: Diana is pursued by the media near her London flat after being linked romantically with the Prince of Wales
Image:Nov 1980: Diana leaves her flat at Coleherne Court in Earl's Court
Image:Feb 1981: Charles and Diana announce their engagement
Image:July 1981: Earl Spencer accompanies his daughter at her wedding to the Prince of Wales at St Paul's Cathedral
Image:July 1981: The newly married Prince and Princess of Wales kiss on the balcony of Buckingham Palace after their wedding ceremony at St Paul's
Image:Aug 1981: Charles and Diana take a break during their country stroll along the banks of the River Dee, during a holiday at Balmoral Castle
Image:June 1982: The proud couple on the steps of the Lindo Wing at St Mary's Hospital with their son Prince William
Image:1983: Diana and Charles watch an official event during their first royal Australian tour
Image:Sept 1984: The Prince and Princess of Wales leave hospital with their new baby Prince Henry (Harry)
Image:April 1985: Diana and Charles meet with Pope John Paul II during a private audience a the Vatican
Image:July 1985: Diana and Charles stand with Bob Geldof in the Royal Box at Wembley Stadium at the start of the Live Aid Transatlantic Spectacular
Image:Nov 1985: Diana wears a Victor Edelstein gown as she dances at a White House dinner with John Travolta. The gown sold for $222,500 during an AIDS charity auction
Image:Nov 1985: US President Ronald Reagan and his wife Nancy welcome Princess Diana and Prince Charles at the White House
Image:July 1985: Diana laughs with Carolyn Herbert in the Royal box at Wimbledon before the men's singles semifinal between Jimmy Connors and Kevin Curren
Image:June 1986: Prince Charles and pop stars look on as Princess Diana cuts a cake to mark the tenth year of the Prince's Trust at a charity rock concert at Wembley
Image:Feb 1987: Charles watches Diana and The Duchess of York in the snow at Klosters in the Swiss Alps
Image:Aug 1987: Diana holds William, 6, and Harry, 3, as they pose during a photo session in Palma de Mallorca, Spain
Image:June 1988: Diana in the driving seat of the 'Striker' tank, getting instructions from Sgt Chris O'Byrne on Salisbury Plain
Image:Aug 1988: Prince Harry yawns as his mother holds him at Marivent Palace as guests of King Juan Carlos and Queen Sofia in Mallorca
Image:Sept 1989: Diana follows her sons Prince Harry, 5, and Prince William, 7, on Harry's first day at the Wetherby School in Notting Hill, west London
Image:Feb 1992: Diana sits alone in front of the Taj Mahal during a Royal tour of India
Image:Feb 1992: Diana, William, and Harry applaud during the Wales vs France Five Nations Cup match at Cardiff Arms Park
Image:April 1991: Diana meets an AIDS patient at the hospital of the Federal University of Rio de Janeiro in Brazil
Image:Feb 1992: Diana holds the hands of Mother Teresa at the Missionary Sisters of Charity residence in Rome
Image:Feb 1992: Charles kisses Diana after playing a game of polo with a Rajasthan team in Jaipur, India
Image:Jan 1993: Diana relaxes on the sand during a visit to the beach on the Caribbean Island of Nevis
Image:Jan 1993: Diana enjoys the splash of a wave during a morning swim on the Caribbean Island of Nevis
Image:March 1993: Diana gives a high five to Danny Walters, a 29-year-old student onlooker, after her visit to the Riverpoint hostel for women in Southwark, London
Image:Aug 1993: Diana ducks whilst descending a log flume water ride, Splash Mountain, at Walt Disney World in Florida. Prince Harry is shown front left
Image:Dec 1993: Diana , patron of the National AIDS Trust, chats with singer George Michael before the start of the Concert of Hope in London to mark World AIDS Day
Image:June 1994: Diana meets invited guests at the Serpentine gallery in Hyde Park
Image:July 1994: Diana and Harry talk with Flavio Briatore, team manager for the Benetton Ford F-1 before the start of the British Grand Prix at Silverstone
Image:Jan 1995: Diana attends an awards ceremony for the Council of fashion Designers of America, in New York
Image:May 1995: The Prince of Wales, Prince William, Princess Diana and Prince Harry attend a ceremony in Hyde Park to commemorate the 50th Anniversary of VE Day
Image:Aug 1995: Diana, Harry, William and Charles watch the parade march past as part of the commemorations of VJ Day in London
Image:Sept 1995: Diana attends the concert 'Luciano Pavarotti and friends together for the children of Bosnia' in Modena, Italy
Image:Feb 1996: Diana pulls on her head scarf as her friend Jemima Goldsmith does the same at the Shaukat Khanum Memorial Cancer Hospital in Lahore, Pakistan
Image:Jan 1997: Diana walks in a safety corridor of the landmine field in Huanbo, Angola, during a visit to help a Red Cross campaign outlaw landmines worldwide
Image:July 1997: Diana comforts pop star Elton John as he weeps at a memorial mass for Italian fashion king Gianni Versace in Milan
Image:Aug 1997: Diana comforts a woman during a visit to Sarajevo's Lion cemetery on one of her last engagements highlighting the suffering of landmine victims
Image:Aug 1997: Diana and Dodi al Fayed cruising in Saint Tropez, South France, just weeks before they were killed in a car crash in Paris
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Ceremony and event are the servants of emotion, though sometimes they can tweak it. On 6 September 1997, as the King's Troop, Royal Horse Artillery and Welsh Guards Bearer Party stepped off from Kensington Palace, the global catharsis of mourning and healing began.
In the seconds before going live to commentate the event, I thought much of the young girl whose father had been a school friend of my father's in the war. The young woman who had been friend to so many I knew.
It was a grim duty, but to be a part of what was actually a striking and internationally profound event was a privilege.
And the funeral ceremony itself was a conduit for every view, opinion, anger and sadness that boiled about the world.
Twenty years on, some of these emotions still unsettle many, but the nation delivered Diana, Princess of Wales from an imperfect world into the peace of her Althrop island grave, perfectly.