Queen Elizabeth II becomes Britain’s longest-reigning monarch later when she passes the record set by her great-great-grandmother Queen Victoria.
The Queen will have reigned for 63 years and seven months – calculated at 23,226 days, 16 hours and approximately 30 minutes – at about 17:30 BST.
Prime Minister David Cameron will lead tributes in the House of Commons and there will be a River Thames salute.
The Queen, who is 89, will spend the day on official duties in Scotland.
The Diocesan Bishop, Rt Rev. Julian Henderson; Bishop of Lancaster, Rt Rev. Geoff Pearson and Bishop of Burnley, Rt Rev. Philip North commended the Queen’s dedication and service, as well as her Christian faith.