The Commonwealth Heads Of Government Meeting, abbreviated to CHOGM, is held in Langkawi in 1989 .
It is a biennial summit meeting of the heads of government from all Commonwealth nations.
Every two years the meeting is held in a different member state, and is chaired by that nation's respective Prime Minister or President, who becomes the Commonwealth Chairperson-in-Office. Recently, meetings have been attended by Queen Elizabeth II, who is the Head of the Commonwealth, although the Queen's formal appearance only began in 1997.
The first CHOGM was held in 1971, and there have been twenty-one held in total: the most recent in Trinidad and Tobago in 2009. They are held once every two years, although this pattern has twice been interrupted. They are held around the Commonwealth, rotating by invitation amongst its members.