Section 68. Time of sale

68. Time of sale.— Save in the case of property of the kind described in the proviso to rule 43, no sale hereunder shall, without the consent in writing of the judgment-debtor, take place until after the expiration of at least[1] [fifteen days] in the case of immovable property, and of at least[2] [seven days] in the case of movable property, calculated from the date on which the copy of the proclamation has been affixed on the Court-house of the Judge ordering the sale.