Meaning of calendario by Felipe Lorenzo del Río

The word calendar has etymology Latin kalendae kalendarum ( used always in the plural: the kalends ) to the Romans was the first day of each month and that conjuntammente with the 40 nonas; nonae nonarum: days 5 or 7 of the month ) and the IDEs ( iduum IDEs: day 13 or 15 of the month ) they were used to identify each day of the month. For example on 12 March identified him saying: " 4 days before the IDEs of March " in latin, " before diem IV idus martias ". As you've said above, our calendar has undergone three major reforms: of the Roman king Numa Pompilio in 713 a. d. C., which added two months, January and February, as before only had 10; of Julio César in 46 a. d. C. that it had 445 days for the following years had 365 and a quarter and the year 1582 Pope Gregorio XIII removed 10 days a year, from October 4 to Friday, October 15. In this way, the people who died on 4 October of that year were buried the following day, 15th of that month. Thus it happened to our Mystic, Saint Teresa of the child Jesus.