The difference between Calends and Ides
When used as nouns, calends means the first day of a month, particularly of the months of the roman calendar, whereas ides means the notional full-moon day of a roman month, occurring on the 15th day of the four original 31-day months (march, may, quintilis or july, and october) and on the 13th day of all other months.
check bellow for the other definitions of Calends and Ides
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Calends as a noun (often, _, capitalized):
The first day of a month, particularly of the months of the Roman calendar.
Examples:
"The third day before the calends of February is January 30th; the third calends of March is February 27th or 28th; and the third of the calends of May is April 29th."
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Calends as a noun (Judaism, Biblical, obsolete):
the Jewish festival of the new moon, which begins the months of the Hebrew calendar.
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Calends as a noun (figuratively):
The first day, a beginning.
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Calends as a noun (figuratively):
A day for settling debts and other accounts.
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Calends as a noun (uncommon):
; a record, an account.
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Ides as a noun (historical, often, _, capitalized):
The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months.
Examples:
"The third day before the ides of March is March 13th; the third ides of August is August 11th; and the third of the ides of November is November 11th."
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Ides as a noun: