Description
Measure a visitor record's supplied retention-end date gap.
Biosecurity metadata can record custody references, inventory counts, access assertions and review dates. A balanced inventory does not authenticate materials or explain discrepancies, and a recorded permission flag does not grant access. These tools organize supplied records rather than inspect facilities, assess threats or provide operational procedures.
Measure a visitor record's supplied retention-end date gap.
When to use this tool
Use Biosecurity Visitor Record Retention Offset when you already have recordDate, suppliedRetentionEndDate and need to measure a visitor record's supplied retention-end date gap.
How to use the tool and how it works
- Enter recordDate, suppliedRetentionEndDate. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedCalendarDays. Use the output convention below.
Parse real UTC dates; return suppliedRetentionEndDate-recordDate in calendar days.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| recordDate | Record Date | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| suppliedRetentionEndDate | Supplied Retention End Date | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedCalendarDays | Signed Calendar Days | Required. Finite number. |
{
"input": {
"recordDate": "2026-10-28",
"suppliedRetentionEndDate": "2026-11-01"
},
"output": {
"signedCalendarDays": 4
}
}Limitations and assumptions
- Negative gaps are retained. No retention policy, record, authorization, access, legal compliance or biological security is established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Use controlled inventory, custody, authorization and oversight records for real decisions. Verify the underlying evidence and applicable requirements through the established professional process; local labels and balances do not establish security or compliance.
References
Similar or alternative tools
- Biosecurity Policy Exception Expiry
Measure calendar days until a recorded policy-exception expiry.
- Biosecurity Access Review Date Margin
Measure a recorded access-review due date's supplied margin.