Biden and his aviators greet queen on a sunny afternoon

President Joe Biden and his aviator sunglasses met Queen Elizabeth II on bright Sunday afternoon.

The queen hosted the president and first lady Jill Biden at Windsor Castle, her royal residence near London. Biden flew to London after wrapping up his participation in a three-day summit of leaders of the world's wealthy democracies in Cornwall, in southwestern England. He arrived at the castle aboard the presidential helicopter and was ferried to the queen in a black Range Rover.

The 95-year-old monarch greeted the Bidens in the castle’s quadrangle, where she waited beneath a covered dais that shielded her from the sun. Assembled soldiers from the Queen’s Company First Battalion Grenadier Guards gave a royal salute and the Bidens placed their hands over their hearts as the U.S. national anthem was played.

US President Joe Biden inspects a Guard of Honour after arriving to meet Britain's Queen Elizabeth II at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoMatt Dunham, Pool)

The president was then led down a row of troops standing at attention on the grass. He had a stern expression on his face after he had removed his trademark sunglasses, but when the 78-year-old Biden got to the end of the row, he smiled for the soldier in front of him who held up a sword. The queen and Jill Biden remained on the dais.

The Bidens then headed inside to take tea with the queen.

Biden is the 13th American president to meet the monarch. During the queen's nearly 70-year reign, President Lyndon B. Johnson is the only one who did not make her acquaintance while he was in office.

Britain's Queen Elizabeth II with US President Joe Biden and First Lady Jill Biden in the Grand Corridor at Windsor Castle, Windsor, England, Sunday June 13, 2021. The queen hosted the president and first lady Jill Biden at Windsor Castle, her royal residence near London. Biden flew to London after wrapping up his participation in a three-day summit of leaders of the world's wealthy democracies in Cornwall, in southwestern England. (Steve ParsonsPool via AP)

She has welcomed four other U.S. presidents to Windsor Castle, where she has been isolating during the coronavirus pandemic. They are Donald Trump in 2018, Barack Obama in 2016, George W. Bush in 2008 and Ronald Reagan in 1982.

Biden's first time meeting the queen came in November 1982, when as a U.S. senator he traveled to the United Kingdom for a meeting of the British-American Parliamentary Group, the White House said Sunday. Biden was part of a group that met with the monarch during that visit.

The queen has been riding out the pandemic at Windsor Castle, but also has begun getting out now and again after the April death of her husband, Prince Philip, at age 99.

Britain's Queen Elizabeth II speaks to US First Lady Jill Biden, left, while US President Joe Bidenlooks on, while watching a Guard of Honour march past before their meeting at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoMatt Dunham, Pool)

On Friday, she joined other royal family members, including Prince Charles and Prince William and their spouses, at a reception in Cornwall for the Group of Seven leaders.

Britain's Queen Elizabeth II arrives to meet with US President Joe Biden before receiving a Guard of Honour at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoAlberto Pezzali)

US President Joe Biden, First Lady Jill Biden and Britain's Queen Elizabeth II leave the dais after receiving Guard of Honour at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoAlberto Pezzali)

Britain's Queen Elizabeth II speaks to US First Lady Jill Biden, left, while US President Joe Bidenlooks on, while watching a Guard of Honour march past before their meeting at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoMatt Dunham, Pool)

US President Joe Biden, First Lady Jill Biden and Britain's Queen Elizabeth II leave the dais after receiving Guard of Honour at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoAlberto Pezzali)

Britain's Queen Elizabeth II stands with US President Joe Biden and First Lady Jill Biden as they review a Guard of Honour at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoAlberto Pezzali)

US President Joe Biden takes a salute from a Guard of Honour after arriving with First Lady Jill Biden to meet Britain's Queen Elizabeth II at Windsor Castle near London, Sunday, June 13, 2021. (AP PhotoAlberto Pezzali)

President Joe Biden and first lady Jill Biden walk to a motorcade vehicle after stepping off Marine One at Windsor Castle in Windsor, England, Sunday, June 13, 2021. The Bidens are meeting with Queen Elizabeth II. (AP PhotoPatrick Semansky)