The octave of Allhallowtide, lasting "eight days was established by Pope Sixtus IV in 1430 for the whole Western Church." The octave, however was eliminated in the 1955 reforms of the Catholic Church, although it continues to be observed by many Anglicans. The faithful may still obtain a Plenary Indulgence by visiting a cemetery and praying for the dead during the octave of All Hallows. Within Allhallowtide, which has a theme revolving around martyrs and saints, many Christian denominations also observe the International Day of Prayer for the Persecuted Church on the first Sunday of November, to remember those who continue to be persecuted for their Christian faith. In the United Kingdom, the Church of England, mother church of the Anglican Communion, extended All Saints-tide to include Remembrance Sunday in the 20th century.