Maundy Thursday April 22 inclusive, but these dates fall on different days depending on whether the Gregorian calendar or Julian calendar is used liturgically. Eastern churches generally use the Julian calendar and celebrate this feast throughout the 21st century between April 1 and May 5 in the more commonly used Gregorian calendar. The liturgy held on the evening of Maundy Thursday initiates the Easter Triduum, the period which commemorates the passion, death, and resurrection of Jesus; this period includes Good Friday and Holy Saturday, and ends on the evening of Easter. The Mass of the Lord's Supper or service of worship is
Royal Maundy Allison and Sarah Riddell in their "Royal Encyclopedia", the service "has become the occasion of a royal pilgrimage to different parts of the country". The Queen has directed that the service not be held in London more often than once in ten years. Westminster Abbey was the site of the 2001 Royal Maundy, and again in 2011, the first ever televised. On 20 March 2008, at the Church of Ireland St Patrick's Cathedral, Armagh, the Queen attended the first Maundy service held outside England and Wales. Today the recipients are pensioners, chosen on an interdenominational basis from various Christian churches