This correspondence addresses the vernal equinox as noted by the revered Bishop Anatholius, contrasting his observations with those of other Egyptian scholars. The author elaborates on the implications of the equinox for the timing of Easter, emphasizing the importance of aligning the celebration with the astronomical events. The text also explores the historical context of these calculations, referencing ancient authorities and their interpretations, ultimately arguing for a consistent understanding of the equinox's role in determining the timing of the Paschal feast.