Psychological Astrology / Cosmic Coaching & Critical Thinking
Birth Time is normally recorded on US Birth Certificates.
If this is unavailable ask Mother / Witness & check Baby books or health records.
Most hospitals will provide the information for a small fee and / or can tell you where your Birth record is archived.
The birth time RECTIFICATION service is a method of calculating a workable estimated time of birth; using a combination of specialist software and the historical information you provide.
If you are unable to acquire a birth time accurate within 1 hour by any other means ; this can be used as a final recourse