The Coronation of King Charles was planned with military precision, with each part of the day scheduled to the minute.
And although the historic occasion - on the whole - went off without a hitch, there was one awkward moment outside Westminster Abbey before the service even began.
The Prince and Princess of Wales and their youngest children Princess Charlotte and Prince Louis were due to be at the venue before the King and Queen Camilla.
This was so they could take their seats before the procession through the Abbey but it didn't quite go to plan. And a source has revealed why this happened - and it was down to a very unusual reason.
Charles and Camilla were seen awkwardly sitting outside the entrance waiting for William and Kate to arrive, who, in the end, were forced to join the procession.
It led to speculation the Waleses were late - especially as they later released a slick social media video showing them leaving Kensington Palace on the morning of the big day.
But rather than them being late, a source says the King and Queen were actually very early - and it was all down to the horses pulling them in the Diamond Jubilee State Coach, who got to the Abbey a whole six minutes ahead of schedule.
The source who took part in the procession told The Telegraph: "When they did the dress rehearsal it was the middle of the night so the horses were quite sleepy and took their time.
"But on the day of the Coronation, they were wide awake and consequently went a lot faster than they had in the practice. That's what threw the timings out."
The footage that William and Kate released at the weekend charting the Coronation weekend showed them and their children, including Prince George, in several candid behind the scenes moments.
The video begins with a voiceover from a BBC presenter, saying: "The flags are out, the scene is set for a weekend of splendour and celebration."
It then captures the couple going on a walkabout to greet royal fans camped out on the Mall, and gathering at a reception with political leaders.
Moving on to the day of the Coronation, footage shows the Wales' inside their home and dressed in all their regalia as Princess Charlotte and Prince Louis gaze outside a window.
Charlotte beams as they walk out the entrance of Kensington Palace, and points to the state cars waiting to take them to Westminster Abbey.
Shifting to the ceremony, a voiceover is played of William saying: "I, the Prince of Wales, pledge my loyalty to you, and faith and truth I will bear unto you, as your liege man of life and limb, so help me God."
Crowds of fans cheer as the military procession makes its way up the Mall with the King, Queen and Wales' family waving from inside their carriages.
The day of the Coronation ends with footage showing working members of the royal family standing on Buckingham Palace's balcony while watching the flypast.
Later, the clip shows William doing a rehearsal for his speech at the Coronation Concert, walking up on stage and facing the mic.
Kate is also seen encouraging little Louis as he pushes a wheelbarrow during a volunteering project at a scout hut.
One particularly candid moment shows the beaming Princess skipping along with Charlotte and Louis while holding their hands.
The video ends with scenes of revellers waving flags and dancing along at the Coronation Concert.
Cheers erupt as William rounds off his speech, saying: "God save the King".
