The date of a divorce is listed on the official divorce decree, according to LegalZoom. Both parties to the divorce and the judge who presided over it all sign the original decree, and the court issues copies at the time of the divorce.
If a person has misplaced his copy of the divorce decree, it is possible to obtain a copy. The clerk's office in the court where the divorce was filed is able to issue a copy, states LegalZoom. Another option is to contact the Department of Vital Records in the state where the divorce was filed. An attorney who represented a party in a divorce is sometimes also able to provide a copy if it cannot be found elsewhere. There are fee-based websites that provide a copy of a divorce decree when given the proper information to track it down.