Oh been waiting for "T" to come up in The Craft Barn's Alpha Challenge. A special day from last month is the Queen's Official Birthday celebrated on the 2nd Saturday in June. It is called Trooping the Colour, where a flag is the "colour" and it has been a British tradition since 1748.
A different regiment is chosen each year to troop their colour through the ranks of the guards and the Queen inspects her troops. There are march pasts and fly pasts too after the royal party gets back to Buckingham Palace.
It is a splendid occasion.