No, it has nothing to do with presents.
This Saturday, June 9th, London will celebrate Queen Elizabeth II's 92nd birthday with a giant procession known as Trooping the Colour. But if you look up her date of birth, you'll see Her Majesty was born on April 21st. Confusing, huh?
As it turns out, there's a reason Lillibet gets to celebrate her birthday twice. Brits love a good parade, and April 21st isn't always primo weather for outdoor revelry. That's why Queen Elizabeth honors her birthday publicly in June — typically the second Saturday of the month, as Mental Floss reports — in the hopes of having warmer, more ideal weather conditions for a fun and horse-drawn carriage-filled parade.
Just like we'd love to reschedule a big tailgate if the weather turns cold and dreary, it makes sense that Londoners would prefer to enjoy a birthday bash with a better chance of sunny, warm weather. But this tradition is nothing new, as Trooping the Colour has honored the official birthday of the British Soverign for more than 260 years. "[T]he tradition dates all the way back to King George II in 1748, who combined the annual summer military march with his birthday celebration, even though he was born in October," notes Caroline Hallemann in a recent article on Town and Country. "Ever since, the reigning monarch has had the option of having an official birthday in the summertime."
Now, how can we channel our inner royal and convince our friends and family that we, too, deserve to have two annual birthday jamborees?