139. Calculation of periods.

In non-testamentary instruments to which alone the first of the statutory periods1 is applicable, where accumulation is directed during the lives of strangers without a reference to any minority2, it is valid for the period common to their lives and the settlor's life3.

The period of 21 years from the death of the settlor or testator which constitutes the second of the statutory periods is reckoned so as to go up to and include the twenty-first anniversary of his death and to follow immediately on his death4.

The term of a minority of any person living or en ventre sa mère