Have you ever had a birthday ruined by inclement weather? If so, it's a dead give-away that you're not the Queen of England. Her Majesty Elizabeth II was born on April 21, 1926, a time of year renown for its abundant rain. And if you are the Queen of the world's most famous monarchy, that simply will not do.
As a result, Elizabeth II celebrates both her actual birthday and her "official" birthday on the most pleasant Saturday in June. The latter is marked by the Trooping the Colour parade, for which other members of the royal family gather fete the Queen. This year's Trooping takes place on June 13, in case you're short on birthday parties to attend this summer.