The spouse against whom a child support order was made becomes liable to pay the recalculated amount on the day, or on the expiry of the period specified by the law of the province or, if no day or period is specified, on the expiry of the period prescribed by the regulations.
The former spouse against whom a child support order was made becomes liable to pay the amount as recalculated pursuant to this section thirty-one days after both former spouses to whom the order relates are notified of the recalculation in the manner provided for in the agreement authorizing the recalculation.