First Father's Day without Prince Philip—here's how the royal family is remembering him

The royal family must mark another occasion without Prince Philip. This is the first Father's Day since the Duke of Edinburgh's passing in April, and his relatives showed the world just how much he is missed.

• Royal fans can take a look at black and white pictures of Prince Philip on various relatives' Instagram pages.
• This year's Father's Day comes 10 days after what would've been Prince Philip's 100th birthday on June 10.
• In other royal news, rumor has it that Kate Middleton's planning a birthday surprise for Prince William after a difficult year. 

To commemorate Prince Philip on Father's Day, the royal family has taken us back in time. Sentimental words and old photographs abound, and the Royal Family's Instagram kicked things off with a 70-year-old snapshot. 

"To all dads everywhere, we wish you a very special Father’s Day," the caption read. "To mark #FathersDay we are sharing this photograph of The Queen with her father, King George VI, and Prince Philip watching a young Prince Charles sitting on a statue at Balmoral in 1951."

See the royal family's photo of Prince Philip from 1951

Prince Charles followed suit. He shared a particularly somber message, along with a photo of himself as a little boy next to his father with a caption that read, "To all Papas everywhere, and to those who may be missing their Dads today, we are thinking of you and wishing you a special #FathersDay."

His Instagram post also included images of Duchess Camille with her father and a shot of himself with Prince William and Prince Harry. 

Kate Middleton and Prince William's Father's Day post provided a current photo of Prince Philip and Queen Elizabeth surrounded by several of their great-grandchildren, including their three kids Prince George, Princess Charlotte, and Prince Louis. 

It's been an incredibly difficult time for the family as they adapt to a new norm without its patriarch, particularly since there have been so many momentous occasions since his death: Prince Philip's 100th birthday was on June 10, and the Queen was forced to ring in the milestone without him. She also marked the anniversary of her crowning in June without her "strength and stay" and then met her 11th great-grandchild, Lilibet Diana, via video call alone. 

Despite the difficult moments, the royal family plans to keep Prince Philip's memory alive. If you're curious to learn more about the Duke of Edinburgh, exhibits at Windsor Castle and the Palace of Holyroodhouse, which open on June 24 and July 23 respectively, will honor his legacy. Royal fans can take a look at over 150 artifacts and dive into Prince Philip's accomplishments.