Prince Harry, reportedly the third most popular in the royal family, is all set to celebrate his 31st birthday on 15 September, 2015 (Tuesday). And while you must be thinking that our man may have big plans to celebrate the day as he returns to UK from Africa after so many months, it looks like the self-proclaimed bad uncle of Princess Charlotte will be spending the day in a very unique way.

No he isn't spending time with Princess Charlotte and George, or meeting his girlfriends or catching up with brother Prince William and his wife Kate. Instead, Prince Harry of Wales has decided to spend the day watching airplanes.

Yes, you heard it right. According to The Daily Mail, Prince Charles younger son, who is a former Army captain and helicopter pilot himself, will be spending the day at RAF flypast with World War II veterans, checking out vintage airplanes, including a fleet of 40 Hurricanes, Spitfires and Blenheims take to the air. The event is held to commemorate the 75th anniversary of the Battle of Britain.

Interesting and very unlikely, isn't it? Well, not just this, there are many other interesting facts about Harry, who is fifth in line to the throne and is popularly known as the "bad boy" of the royal family. And unlike his older brother, Prince William, who is happily married to Kate Middleton and has two children, Harry is still very much single.

To celebrate The Wales Royal's 31st birthday, we bring to you 10 such interesting, unknown facts about Prince Harry that will surprise you.

  1. His actual given name is Henry Charles Albert David and Harry is just a nickname.
  2. Harry is involved with various causes and has done immense charitable work. He has not only set up the Sentebale charity to help AIDS orphans in South Africa, but he is also involved with WellChild and MapAction. Did you know, he also maintains Diana – Princess of Wales Memorial fund in memory of his late mother, a charity which he set up when he was just 21.
  3. His mother Diana called him "My little Spencer".
  4. Harry has impressed everyone in the British military with his piloting abilities. They call him an instinctive flyer.
  5. When he was young, Harry had a lop-eared rabbit at Highgrove, the family's country estate. In fact, he also loved the sheep and spent a lot of time with them, filling their buckets, giving them hay and picking up the lambs.
  6. At the age of three, when Harry joined Jane Mynors nursery school, he didn't mix with other children and would always get bullied. But he found his way into toddler society by playing a goblin in the Christmas play. The next year, he even had a speaking role as a shepherd.
  7. One of his favourite films is "Zulu". A 1964 film about a battle in the Anglo-Zulu War in Southern Africa in 1879.
  8. Harry was the one to invent the Invictus Games after attending the Warrior Games in Colorado Springs in 2013. The game witnesses more than 400 competitors — serving military personnel and veterans — from 13 countries compete in nine adaptive sports including athletics, swimming, powerlifting, indoor rowing, sitting volleyball, road cycling, wheelchair basketball, wheelchair rugby, and archery.
  9. In 2013, Prince Harry participated in the Wounded South Pole Allied Challenge, along with injured servicemen and women. He trekked from across the globe to the South Pole, becoming the first member of the royal family to go to the South Pole.
  10. Kate Middleton's parents aren't huge fans of Prince Harry. The Middletons find the royal's joking and unconventional manners impolite.
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