Among the. Romans the first day of every month, being spoken of by itself. or the very day of the new moon, which usually happen together. And if pridie, the day before, be added to it. then it is the last day of the foregoing month, as pridie calcnd. Scptcmb. is the last day of August. If any number be placed with it, it signifies that day in the former month which comes so much before the month named, as the tenth calends of October is the 20th day of September; for if one reckons backwards, beginning at October, that 20th day of September makes the 10th day before October. In March, May, July, and October, the calends begin at the sixteenth day, but in other months at the fourteenth; which calends must ever bear the name of the month following, and be numbered backwards from the first day of the said following months. Jacob. See Rives v. Guthrie, 46 N. C. 87.
Black’s Law Online Dictionary
