Prince Philip died on Prince Charles and Camilla's wedding anniversary

• Prince Charles died Friday at the age of 99.
• His death coincided with Prince Charles and Camilla's wedding anniversary.
• It's been 16 years since the couple tied the knot, though they've been involved much longer.

Prince Philip, Queen Elizabeth II's husband, died at the age of 99 on Friday. He was the longest-serving British consort in history.

Philip was reportedly recovering from a heart procedure at the time of his death after suffering from heart problems for some time.

In a bittersweet coincidence, Prince Philip's death occurred on a significant date for Prince Charles.

April 9, 2021, marks Prince Charles and Camilla's 16th wedding anniversary.

Charles and Camilla, the Duchess of Cornwall, got married on April 9, 2005 - almost 35 years after they met.

The couple had been romantically involved for years before they finally got married. They were first connected in the 1970s, and they famously had an affair in the 1980s while Charles was married to Princess Diana. Camilla was also married at the time.

They were publicly photographed together for the first time as a couple in 1999, following Charles' divorce and Diana's death.

After dating officially for six years, Charles and Camilla said their wedding vows in a civil ceremony at Windsor Guildhall.

The royal family was reportedly not initially accepting of Camilla when she and Charles began publicly dating, with Queen Elizabeth II refusing to officially meet Camilla until 2000.

By the time they got married though, Camilla was accepted as Charles' partner. Prince Philip and Queen Elizabeth II did not attend Charles and Camilla's wedding ceremony, though they did go to the reception.

After the wedding, Camilla was given the title Duchess of Cornwall.

Camilla could have taken the title Princess of Wales, but she didn't because it was so closely associated with Diana, as Town & Country reported.

Clarence House had not released an official statement on Prince Philip's death at the time of writing.