Reform of the date
In the 20th century, some individuals and institutions have propounded a fixed date for Easter, the most prominent proposal being the Sunday after the second Saturday in April. Despite having some support, proposals to reform the date have not been implemented. An Orthodox congress of Eastern Orthodox bishops, which included representatives mostly from the Patriarch of Constantinople and the Patriarch of Serbia, met in Constantinople in 1923, where the bishops agreed to the Revised Julian calendar.
The original form of this calendar would have determined Easter using precise astronomical calculations based on the meridian of Jerusalem. However, all the Eastern Orthodox countries that subsequently adopted the Revised Julian calendar adopted only that part of the revised calendar that applied to festivals falling on fixed dates in the Julian calendar. The revised Easter computation that had been part of the original 1923 agreement was never permanently implemented in any Orthodox diocese.
In the United Kingdom, the Easter Act 1928 set out legislation to allow the date of Easter to be fixed as the first Sunday after the second Saturday in April (or, in other words, the Sunday in the period from 9 to 15 April). However, the legislation has not been implemented, although it remains on the Statute book and could be implemented subject to approval by the various Christian churches.
At a summit in Aleppo, Syria, in 1997, the World Council of Churches (WCC) proposed a reform in the calculation of Easter which would have replaced the present divergent practices of calculating Easter with modern scientific knowledge taking into account actual astronomical instances of the spring equinox and full moon based on the meridian of Jerusalem, while also following the Council of Nicea position of Easter being on the Sunday following the full moon. The recommended World Council of Churches changes would have sidestepped the calendar issues and eliminated the difference in date between the Eastern and Western churches. The reform was proposed for implementation starting in 2001, but it was not ultimately adopted by any member body.