Eclogue XII. — How many Days there are in each Month

June, April, and November, with September, each month of these has thirty days. For each of seven months add one besides to thrice ten days, one to the Calends of Janus and of Mars, and one to those which May, July, and August bring, and one to October and December, the last month of all. A single month remains with but eight and twenty days, that month which Numa caused to follow next to Janus, the leader of the year. Thus the year reckons its days to be three hundred and sixty-five, with one quarter day.