Neiman Marcus has their private night sale twice annually in the late spring and late fall. The sale is (usually) for one day only. Current season full price merchandise is discounted for a certain percentage for that day only. The next day, the items go back to full price and are no longer discounted. In the past, designer merchandise has been discounted by up to 40%. Percentages off vary by department. Items on the web may be included as well.