Every sale under this chapter shall be by public auction or by private sale with the approval of the Court of Chancery. If the sale is by public auction, the Court shall direct the executor or administrator to give notice thereof by advertisements made and signed by the Clerk, describing the land to be sold and appointing the day, hour and place of such sale, posted, at least 10 days before the day of sale, at such places in the county as the order specifies, and also in such other manner as may be deemed proper in a particular case. The executor or administrator may adjourn the sale.