snapshot Database Time
Parameters
value
The timestamp of the most recent transaction applied to the database that you're backing up. Thus, if you restore a snapshot, SnapshotDatabaseTime is the most recent transaction in the restored DB instance. In contrast, originalSnapshotCreateTime specifies the system time that the snapshot completed.
If you back up a read replica, you can determine the replica lag by comparing SnapshotDatabaseTime with originalSnapshotCreateTime. For example, if originalSnapshotCreateTime is two hours later than SnapshotDatabaseTime, then the replica lag is two hours.