41. Where a bill is not payable on demand, three days, called days of grace, are, in every case, where the bill itself does not otherwise provide, added to the time of payment as fixed by the bill, and the bill is due and payable on the last day of grace, but whenever the last day of grace falls on a legal holiday or non-juridical day in the province where any such bill is payable, the day next following, not being a legal holiday or non-juridical day in that province, is the last day of grace.

R.S., c. B-5, s. 42.