The Duke and Duchess of Cambridge and Prince Harry welcome the President and First Lady of the United States of America to Kensington Palace
It all began at Windsor Castle where the sunshine of the Queen's birthday had been replaced by grey skies but that hadn't dampened the celebrations. Elizabeth II and Prince Philip headed out, by car, to meet the Obamas as they landed by helicopter.
Then it was inside to the Oak Room where they posed for photographs and the US President handed over a present for the birthday Queen - a photo book of all of the visits Elizabeth II has made to America.
There was a private lunch for the Queen, the Duke of Edinburgh and their guests.
The evening was all about the bright lights of London but the grey skies gave way to rain. As Barack and Michelle Obama arrived at Kensington Palace, there were umbrellas which disappeared quickly for a formal photo before everyone headed inside.
.@BarackObama and @MichelleObama arrive at Kensington Palace for dinner with The Duke, Duchess and Prince Harry pic.twitter.com/ZdXMj24pCL— Kensington Palace (@KensingtonRoyal) April 22, 2016
There was a meeting with Prince George (see the photos here) and then the royal hosts and their visitors chatted in a rather cosy looking front room with the rocking horse given to George by the Obamas as a first birthday present in the corner - always good to let people know their presents are being used.
The Duke, Duchess and Prince Harry chat with the President and First Lady before dinner at Kensington Palace pic.twitter.com/vWCru1ifDW— Kensington Palace (@KensingtonRoyal) April 22, 2016
And then it was time for another private meal. The royals and their guests have met several times before so these encounters were relaxed. From lunch in a castle to dinner in a palace, this was a right royal day all round.