N
(in the Roman calendar) the ninth day before the ides of each month: the seventh day of March, May, July, and October, and the fifth of each other month 古罗马历法每月ides 之日的前第九日：三、五、七或十月的第七日或其他月份的第五日
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People who profess no faith affiliation -- often called "nones, " as in "none of the above" -- now form nearly 23% percent of the country's adult population, according to the Pew study.