The Lord Lyon is charged with responsibility for all State Ceremonial in Scotland. In this duty he is assisted by Her Majesty's Officers of Arms comprising at present Rothesay Herald, Snawdoun Herald, Marchmont Herald, Ormond Pursuivant, Dingwall Pursuivant and Unicorn Pursuivant. The Heralds are the senior officers and the Pursuivants are the junior officers. All are members of the Royal Household.
Several ceremonial duties are carried out each year in which the Officers of Arms take part wearing the mediaeval style of tabard displaying the Royal Arms.
The Opening of the General Assembly of the Church of Scotland and the General Assembly Service at St. Giles Cathedral take place in Edinburgh on a Saturday and Sunday during May, the dates being fixed by the Church of Scotland.
The annual Service of Commemoration at the Scottish National War Memorial in Edinburgh Castle usually takes place during June.
On the Sunday immediately following St. Andrew's Day (30 November) the annual St. Andrew's Day Service takes place at St. Giles Cathedral in Edinburgh.
In addition to these regular annual events, there are from time to time other ceremonial occasions such as a Service of Installation of a Knight of the Thistle, Proclamations, and the ceremony for the Installation of the Governor of Edinburgh Castle.