Résumé :
In 525, Dionysius Exiguus created an Easter table which Beda Venerabilis completed for a full cycle of 532 years, the period when the same lunar and solar day reappear. Dionysius based his calculation on an Alexandrian model. Starting with the Alexandrian monk Annianos at the turn of the 5th century, the Byzantines already created Easter tables of 532 years, but these tables are not preserved, and still existing Byzantine Easter tables had generally calculated only for the present or future 19 moon cycle years. However, two manuscripts witness that the Latin Easter tables, based on Dionysius Exiguus, were adopted by Greeks in a Latin-Greek mixed culture, supposedly in southern Italy. This Dionysian Easter table, which starts from 877 CE, is presented here in a critical edition together with the accompanying texts on calculating the moon, sun and indiction and two letters informing about the reason behind this table and its introduction. The equation with the Byzantine world year provides a sound basis to check how the birth and crucifixion of Jesus Christ were dated.