¹ DB: The end of this sentence reads temporum canonem hucusque perduxit; CM (ed. Mommsen, §355) includes quem scripsit between canonem and hucusque, making it that this rule was written by Hyppolitus.

² DB: Read ‘sixteen-year cycle’: CM (ed. Mommsen, §355) has sedecennalem for decemnoualem.

³ DB: CM (ed. Mommsen, §355) reads Eusebio for Iosepho, i.e., Eusebius (i.e., Eusebius of Laodicea, friend of Anatolius (d.283), who he succeeded as bishop of Laodicea). Anatolius is now usually credited with establishing the initial nineteen-year cycle in the Church. See further Alden A. Mosshammer, The Easter Computus and the Origins of the Christian Era (Oxford, 2008), chapter 8.

⁴ DB: This is abbreviated from CM (Mommsen, §357, §359) to such an extent that there is a risk that a reader will not realise that curauit (‘cared’) and habuit (‘had’) have different subjects.