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Prince William

Mark Cuthbert/UK Press via Getty Images

Maybe this due date is later than we first thought.

As royal baby watch continues in the states and around London, both Prince William and Prince Harry were able to commemorate ANZAC Day and the Centenary of the Gallipoli Campaign at two separate ceremonies Saturday morning.

Prince George's father joined grandmother Queen Elizabeth ll and her husband Prince Philip for an outdoor service around 11 a.m. local time. The ceremony began with two minutes of silence before a wreath was place at the Cenotaph.

The royal party later watched and listened to politicians and senior servicemen pay their respects at the memorial. ANZAC Day is a national day of remembrance in Australia and New Zealand for those who've died in wars and other conflicts. 

Queen Elizabeth, Prince Philip, Duke of Edinburgh, Prince William, Duke of Cambridge

Carl Court/Getty Images

Meanwhile, Prince Harry attended the Helles Memorial in Turkey as well as the Nek cemetery where he greeted young children and families.

On the Palace's official Instagram, Prince Harry even stopped to greet veterans including Ron Bergman who looked thrilled to meet a member of royalty.

While the two brothers paid their respects for an important cause Saturday, many are still wondering when Kate Middleton will welcome baby No. 2. 

Prince Harry

Tristan Fewings /Getty Images

Even though we know the Lindo Wing of St. Mary's Hospital is ready at a moment's notice, an exact due date remains quite the royal mystery. Luckily, the Duchess of Cambridge's mother Carole Middleton is ready to help out with whatever is needed.

"[Kate] was very fortunate she came from a family where her mother was home waiting for her when she came home from school," CNN Royals Commentator Victoria Arbiter told E! News. "She has a very good role model in terms of how to raise children."

Love all things royals? Watch new episodes of E!'s first-scripted series The Royals Sunday nights at 10 p.m.