Brazil enacted Law No. 810, which legally defined what counts as a civil year and a month for official purposes. The law states that a year is the period of twelve months counted from a starting day to the corresponding day and month of the following year. It also defines a month as the period counted from a starting day to the corresponding day of the next month. While technical, this law is important because it standardizes time-counting rules used across legal and administrative processes in Brazil.
