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The counting of all periods of time shall be governed by the provisions of this Title, save where it is otherwise designated by a law, court order, regulation, or juristic act.

In calculating a period of time, it shall be calculated in days. But if it is designated with a unit of time shorter than a day, it shall then be calculated according to the unit of time so designated.

If a period of time is designated with a unit of time shorter than a day, its counting shall start from the moment the act in question starts.

If a period of time is designated in days, weeks, months, or years, its first day shall be excluded from the counting, save where the act in question start on that very day from the time customarily deemed to be the time for starting work.

In lawsuits, public affairs, or commercial and industrial business, a day refers to the working time designated by a law, court order, or regulation, or the normal working time of the activities concerned, as the case may be.

If a period of time is designated in weeks, months, or years, it shall be calculated according to the calendar years.

If a period of time is not designated to be counted from the first day of a week, month, or year, it ends on the day before the day of the last week, month, or year which corresponds to the day of its start. If a period of time counted in months or years has no corresponding day in the last month, the last day of that month shall be deemed the day of the end of the period of time.

If a period of time is designated in months and days, or is designated in months and fractions of months, the full months shall be counted first and the days shall then be counted or the fractions of months shall then be counted in days.

If a period of time is designated in fractions of years, the fractions of years shall be calculated in months first, and if fractions of months are left, those fractions of months shall then be counted in days.

In calculating fractions of months according to paragraph 1 and paragraph 2, one month shall be deemed to be composed of thirty days.

If a period of time is extended without the first day of the extension having been designated, the day following the last day of the original period of time shall be counted as such first day.

If the last day of a period of time is a holiday according to an official announcement or according to the custom, the day on which the work resumes after such holiday shall be counted as the last day of the period of time.