Question: When did the person that reign during the period when Book of Common Prayer was published become king of england
Context: The Book of Common Prayer (BCP) is the short title of a number of related prayer books used in the Anglican Communion, as well as by the Continuing Anglican, "Anglican realignment" and other Anglican churches.  The original book, published in 1549 in the reign of Edward VI, was a product of the English Reformation following the break with Rome.  Prayer books, unlike books of prayers, contain the words of structured (or liturgical) services of worship.  The work of 1549 was the first prayer book to include the complete forms of service for daily and Sunday worship in English.  It contained Morning Prayer, Evening Prayer, the Litany, and Holy Communion and also the occasional services in full: the orders for Baptism, Confirmation, Marriage, "prayers to be said with the sick", and a funeral service.  It also set out in full the "propers" (that is the parts of the service which varied week by week or, at times, daily throughout the Church's Year): the collects and the epistle and gospel readings for the Sunday Communion Service.  Old Testament and New Testament readings for daily prayer were specified in tabular format as were the Psalms; and canticles, mostly biblical, that were provided to be said or sung between the readings . The Prayer Book Society of the USA or PBS USA seeks to maintain the Anglican Tradition of Common Prayer and promote the use and understanding of the traditional versions Book of Common Prayer, for example, the 1928 American edition. The Prayer Book Society of Canada or PBS is an organization within the Anglican Church of Canada which "promotes the understanding and use of the Book of Common Prayer as a spiritual system of nurture for life in Christ".  Founded in 1985, the PBS seeks to "ensure the retention of the doctrine and worship of the Book of Common Prayer as required by the Solemn Declaration of 1893, the founding document of the autonomous Anglican Church of Canada." The Act of Uniformity 1662 (14 Car 2 c 4) is an Act of the Parliament of England.  (It was formerly cited as 13 & 14 Ch.2 c. 4, by reference to the regnal year when it was passed on 19 May 1662.)  It prescribed the form of public prayers, administration of sacraments, and other rites of the Established Church of England, according to the rites and ceremonies prescribed in the Book of Common Prayer.  Adherence to this was required in order to hold any office in government or the church, although the 1662 edition of the Book of Common Prayer prescribed by the Act was so new that most people had never even seen a copy.  It also explicitly required episcopal ordination for all ministers, i.e. deacons, priests and bishops, which had to be reintroduced since the Puritans had abolished many features of the Church during the Civil War. The Alternative Service Book 1980 (ASB) was the first complete prayer book produced by the Church of England since 1662.  Its name derives from the fact that it was proposed not as a replacement for the "Book of Common Prayer" ("BCP") but merely as an alternative to it.  In practice, it was so popular that the various printers had to produce several editions very quickly and churches which retained the BCP drew attention to this fact as something to be noted.  The Prayer Book Society was soon complaining that it was becoming hard to find a church which used the old prayer book and that theological colleges were not introducing students to it.  It has now been replaced by "Common Worship". The English Missal is a translation of the Roman Missal used by some Anglo-Catholic parish churches.  After its publication by W. Knott & Son Limited in 1912, the English Missal was rapidly endorsed by the growing Ritualist movement of Anglo-Catholic clergy, who viewed the liturgies of the "Book of Common Prayer" as insufficient expressions of fully Catholic worship.  The translation of the Roman Missal from Latin into the stylized Elizabethan Early Modern English of the Book of Common Prayer allowed clergy to preserve the use of the vernacular language while adopting the Roman Catholic texts and liturgical rubrics. Sunday Services is a modern revision of the Book of Common Prayer of the Anglican Church in Australia, commissioned by the Diocese of Sydney in response to the theological patterns displayed in recent revision.  The book is designed to preserve the reformed theology of the 1662 "Book of Common Prayer", but in more accessible modern language. The Alcuin Club is an Anglican organization devoted to preserving or restoring church ceremony, arrangement, ornament and practice in an orthodox manner.  It was founded in 1897, with its first publication, "English Altars" by W. H. St. John Hope, appearing in 1899.  The Club is dedicated to the "Book of Common Prayer" and conformity to its exact rubric.  In the 20th century, the Club was active in the debate over the rewriting of the "Book of Common Prayer" for the 1920 revision.  Its influence faded somewhat after the first part of the century, and it is now dedicated to studying ceremony of all Christian churches.  Nonetheless, the Club's members are active in the liturgical researches of the official Anglican Church.  Membership in the Club is now around 600, with half being in the UK and many in the United States. Edward VI (12 October 1537 – 6 July 1553) was King of England and Ireland from 28 January 1547 until his death.  He was crowned on 20 February at the age of nine.  The son of Henry VIII and Jane Seymour, Edward was England's first monarch to be raised as a Protestant.  During his reign, the realm was governed by a Regency Council because he never reached his majority.  The Council was first led by his uncle Edward Seymour, 1st Duke of Somerset (1547–1549), and then by John Dudley, 1st Earl of Warwick, from 1551 Duke of Northumberland. The Prayer Book Society is a charity in England that "is established for the advancement of the Christian religion as set forth in the Book of Common Prayer; and, in furtherance of this Object, for the promotion of the worship and doctrine enshrined in the Book of Common Prayer and its use for services, teaching and training throughout the Church of England and other Churches in the Anglican tradition." .  In 2012 the Charity Commission for England and Wales permitted the society to simplify its objects in order to allow it to undertake a number of new activities closely related to its previous activities.  According to the Society it has over 4,500 members and 51 branches throughout England.  The society considers itself to be a sister society of the Prayer Book Society of the USA, the Prayer Book Society of Canada, the Scottish Prayer Book Society and the Prayer Book Society in Australia.  The society's patron is Charles, Prince of Wales and the ecclesiastical patron is Richard Chartres, the Bishop of London.
Answer: 28 January 1547