Royal Engagements

The Queen, Patron, National Council of Young Men's Christian Associations, and The Duke of Edinburgh attend a Service of Thanksgiving to mark the 150th anniversary of the YMCA, at Westminster Abbey, London SW1; and attend a reception for the World Council of Young Men's Christian Associations at Lambeth Palace, London SE1. The Duke of Edinburgh attends the World Forestry Charter Gathering Luncheon, St James's Palace. The Prince of Wales, President, the Prince's Trusts, hosts a garden party at Highgrove House, Gloucestershire. Prince Edward, Patron, attends a concert given by the City of Birmingham Symphony Orchestra at the Royal Albert Hall, London SW7. The Princess Royal, President, Riding for the Disabled Association, visits the South Dartmoor Group, Crossways, Yelverton, Devon; and as President, Save the Children Fund, attends a 75th Birthday Appeal Reception at the China Fleet Club, Saltash, Cornwall. Princess Margaret attends the service of re-dedication of HMS Illustrious at Portsmouth, Hampshire. The Duke of Kent takes the salute at the Royal Tournament, Earls Court Exhibition Centre, London SW5.

Buckingham Palace

The Queen's Gallery at Buckingham Palace opens between 10am and 5pm, and last admission is at 4.30pm. The Royal Mews opens between 12pm and 4pm, and last admission is at 3.30pm.

Changing of the Guard

The Household Cavalry Mounted Regiment mounts the Queen's Life Guard at Horse Guards, 11am; 2nd Battalion Grenadier Guards mounts the Queen's Guard, at Buckingham Palace, 11.30am, band provided by the Scots Guards.

Windsor Castle

The Precincts and State Apartments at Windsor Castle open between 10am and 6pm. Bands playing in the

Royal Parks

St James's Park, Household Division Musicians' Association, 12.30pm-2pm, 5.30pm- 7pm; Regent's Park (Queen Mary's Rose Garden), Cors Horn Ensemble, 12.30pm-2pm.