Convert Record Internal Checkpoint from the system audit table [sys_audit] SummaryRecord Internal Checkpoint is a hexadecimal value that stores the date-time value along with milliseconds. It encodes two values, which are the Unix time since 1970 in milliseconds appended with a counter to distinguish if you have multiple audits made in the same millisecond. For example, the value of this field is 1747454a1480000001. The 0000001 string at the end of the checkpoint is shown for all Record Internal Checkpoint values. Separate it as 1747454a148 and 0000001. Convert 1747454a148 to a decimal, which is 1599679537480. Using epochconverter.com, it shows this number as Wednesday, September 9, 2020, 19:25:37.480, which is the same as the sys_created_on value, with the addition of millisecond resolution.