¿Qué meses se añadieron al calendario y por qué?
Which months were added to the calendar and why?
In order for the Roman calendar year which was ten months long, to be in sync with the lunar year, the months of January and February were added.
Para que el año civil romano, que duraba diez meses, coincidiera con el año lunar, se añadieron los meses de enero y febrero.
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