Description
Return public land-record day span under an endpoint convention.
Historical and archival records distinguish source labels, local grid conventions, edition numbers and validity periods. A parsed token or geometric area term cannot establish provenance, historical identity or land rights. Date endpoints, text-counting units and numbering origins must match the original record.
Return public land-record day span under an endpoint convention.
When to use this tool
Use Public Land Record Date Span when checking the stated archival record, grid, edition or validity-period convention.
How to use the tool and how it works
- Enter firstDay, lastDay, inclusive. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read spanDays. Use the output convention below.
Return public land-record day span under an endpoint convention. Require whole firstDay <= lastDay; spanDays = last-first plus one when inclusive.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstDay | First Day | Required. Safe integer. |
| lastDay | Last Day | Required. Safe integer. |
| inclusive | Inclusive | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| spanDays | Span Days | Required. Safe integer. |
{
"input": {
"firstDay": 100,
"lastDay": 130,
"inclusive": true
},
"output": {
"spanDays": 31
}
}Limitations and assumptions
- The day coordinates and calendar convention are supplied; no actual record, historical conversion or legal deadline is verified.
- 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.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Consult the original archive, survey and applicable authority for historical interpretation, provenance or actual property rights.
References
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