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Evidence Retention Order Date Gap Tool

Calculate signed calendar days between supplied retention-order and retention-end dates without interpreting legal duties.

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Description

Measure a calendar gap associated with an evidence-retention order.

Forensic records distinguish exhibit identity, container links, declared conclusions, timestamp resolution and measurement bases. A matching seal string or recorded certificate is not authentication or proof of custody. Redacted display text and salt-version labels also do not by themselves establish sufficient de-identification or lawful disclosure.

Measure a calendar gap associated with an evidence-retention order.

When to use this tool

Use Evidence Retention Order Date Gap when checking the stated exhibit record, measurement, time or display-policy convention.

How to use the tool and how it works

  1. Enter orderDate, suppliedRetentionEndDate. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read signedCalendarDays. Use the output convention below.

Parse real supplied-retention-end/order YYYY-MM-DD dates. Return retentionEnd-orderDate in UTC calendar days, retaining negative values.1

Input fieldMeaning and unitsAccepted input
orderDateOrder DateRequired. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted.
suppliedRetentionEndDateSupplied Retention End DateRequired. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted.
Output fieldInterpretationReturned shape
signedCalendarDaysSigned Calendar DaysRequired. Safe integer.
json
{
  "input": {
    "orderDate": "2026-10-28",
    "suppliedRetentionEndDate": "2026-11-01"
  },
  "output": {
    "signedCalendarDays": 4
  }
}

Limitations and assumptions

  • No retention law, order validity, obligation to preserve or authority to dispose of evidence is determined.
  • 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

Review verified original evidence and custody records using qualified forensic and legal assessment for actual interpretation, disclosure and evidential decisions.

References

  1. Calculation and input contract: forensic-science/evidence-retention-order-date-gap — tool.io

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