As regards festivals, all the churches of the ancient patriarchates observe many of them, especially the oriental Greeks and the Roman Catholic; the latter, without question, observes the largest number. But the ancient Church of Egypt also distinguished itself by its zeal for the worship of our Lady, and in the Coptic Calendars we find a _commemoratio Dominæ Virginis Mariæ_ on the 21st (corresponding to the 15th in the Julian Calendar) of each month.[495] Formerly every Saturday was generally dedicated to her. The first certain instance of the observance of a festival in honour of the Mother of God, which has so far come to light, is found in the panegyric on St Theodosius, preached by Theodore about the year 500. In this it is stated that a commemoration of the holy Mother of God (θεοτόκου μνήμη) was celebrated annually in the Palestinian monasteries, attended by a concourse of all the monks. Unfortunately neither the date of this festival nor its name is given, although there is good reason for thinking that it was the feast of the 15th August, which had been regarded as the day of our Lady’s death from the earliest times.[496] In Spain, in the time of Bishop Ildephonsus of Toledo († 667), a festival of the Mother of God was also solemnly observed. This prelate made penitential processions (_litaniæ_) in the three preceding days, and composed a special mass for the feast. Here again the particular name of the feast is unfortunately not given. Still it can only have been the feast of the 15th August.[497] The number of feasts of our Lady observed at the present time in the Catholic Church is, as we have said, considerable, among them being some which affect the public life of the community and some whose observance is confined to the four walls of the Church. They can also be classified as greater and lesser, or, according to the date of their institution, as earlier or later. Among the greater feasts are the Conception, Birth, Annunciation and Assumption of our Blessed Lady, and Candlemas; among the lesser are the Presentation of our Lady in the Temple, her Espousals, the Visitation, and now the Feast of the Holy Rosary.