A month after the court hearing, which is when a formal "Decree Nisi" is granted, you will receive what is called a Decree Absolute from the court. You need to produce this document in the event you wish to remarry. You can sometimes shorten the month. For example, you may want to remarry as your fiancee is expecting a baby. Sometimes the Decree Absolute can be shortened to 7 days or even less in appropriate cases. You will probably need legal assistance if you want to shorten the time from the Decree Nisi to the Decree Absolute.