Commonwealth Day is the annual celebration of the Commonwealth of Nations held on the second Monday in March. It is marked by a multi-faith service in Westminster Abbey, normally attended by Queen Elizabeth II as Head of the Commonwealth along with the Commonwealth Secretary-General and Commonwealth High Commissioners in London. The Queen delivers an address to the Commonwealth, which is broadcast throughout the world.
In the year before the quadrennial Commonwealth Games, the Queen starts the Queen's Baton Relay on Commonwealth Day at Buckingham Palace, handing the baton to the first relay runner to start a journey that will end at the Opening Ceremony of the upcoming Games.
World Kidney Day (WKD) is a global health awareness campaign focusing on the importance of the kidneys and reducing the frequency and impact of kidney disease and its associated health problems worldwide.
World Kidney Day is observed annually on the 2nd Thursday in March. At the start of this holiday, 66 countries observed this date in 2006. Within two years, this number rose to 88. WKD is a joint initiative of the International Society of Nephrology (ISN) and the International Federation of Kidney Foundations (IFKF). This holiday was intended to raise awareness about afflictions of the kidney; although many are treatable, they are a secondary medical concern of the greater population.