ART. 13. When the laws speak of years, months, days or nights, it shall be understood that years are of three hundred sixty-five days each; months, of thirty days; days, of twenty-four hours; and nights from sunset to sunrise.
If months are designated by their name, they shall be computed by the number of days which they respectively have.
In computing a period, the first day shall be excluded, and the last day included. (7a)
Compiled from an official source version. Later amendments or repeals may not be reflected; the official text prevails. · Read the official text ↗ · Data as of July 4, 2026
CitationRA 386 (Civil Code of the Philippines) Article 13 (LawPlayer, data as of July 4, 2026)
Source: Supreme Court E-Library, Republic of the Philippines. Philippine laws are public documents (works of the government).
