Depends upon what you are looking at as your source of the trustee sales. Most likely it is because the sale date has been postponed due to mutual agreement between the parties, bankruptcy or some other unknown reason you are not always privy to. You need to call the Trustee listed on the Notice of Trustee Sale to verify the sale date date, time and location. It is public record and you have all rights to know.
Diane Wheatley, Broker