It's the second month of the year with exactly 30 days in it
5 ... You can remember how many days in each month using this 
rhyme: ... Then around 710 BC Numa Pompilius, the second King of Rome, 
added... [DOC] [TLE] Early Roman Calendar | Calendars - Webexhibits [PAR] The calendar consisted of 10 months in a year of 304 days.