The SECOM datetime format (according to the latest version I've got) seems like this: yyyyMMddHHmmss(+HHMM).
The instance search resutls do contain the following fields with datetimes:
- "publishedAt": "2023-03-09T10:57:03.938Z",
- "lastUpdatedAt": "2023-03-09T10:57:03.938Z",
Therefore the latest SECOMLib version should be use to format those fields correctly.