##### 7.1.2.2.1 Cross-Certified Subordinate CA Validity | __Field__ | __Minimum__ | __Maximum__ | | -- | ---- | ---- | | `notBefore` | The earlier of one day prior to the time of signing or the earliest `notBefore` date of the existing CA Certificate(s) | The time of signing | | `notAfter` | The time of signing | Unspecified |