Image Source: Getty / WPA Pool
Thursday marked Queen Elizabeth II's 90th birthday, an event she celebrated with a string of engagements near one of her homes, Windsor Castle, in England.
But if you're the monarch of Britain, you don't get just one birthday: you get two. In addition to commemorating her actual day of birth in April, Queen Elizabeth is also treated to a massive national celebration in honour of her special day every June. The hard-working Queen, who rings in each new year with family, tends to take her birthday off. This year, being her 90th, is special.
The summertime celebration is a bigger party. The June event is referred to as the Trooping of the Colour, an annual parade in London in which troops from the Queen's Household Division parade on horses down London's Whitehall Street. There is music, and the Queen conducts an inspection of the troops. The date changes depending on the year's calendar; in 2016, Queen Elizabeth's official birthday is Saturday, June 11.
There is a long tradition of monarchs celebrating their birthdays in the Summer. The date in June is usually selected when there's a better chance of good weather.
The Queen at the Trooping of the Colour, 1952. Image Source: Getty