The nones were nine days before the ides, reckoning inclusively, according to the Roman method
{i} ninth day before the ides in the ancient Roman calendar (7th of March, May, July, and October, and the 5th of the remaining months); (Catholicism) fifth canonical hour (approximately 3 PM)
In the Roman calendar the eighth day (ninth counting inclusively) before the ides of a month. That is the seventh day of March, May, July, October, and the fifth day of the other months
The canonical office, being a part of the Breviary, recited at noon formerly at the ninth hour, 3 P
The fifth day of the months January, February, April, June, August, September, November, and December, and the seventh day of March, May, July, and October