Description
Add sourceCalendarOffset to recordDay, then subtract referenceDay for offsetDays.
Historical records can use uncertain dates, different calendars and incomplete jurisdiction periods. Signed endpoint differences describe supplied coordinates; they do not perform a historical-calendar conversion or establish the actual period's authority.
Add sourceCalendarOffset to recordDay, then subtract referenceDay for offsetDays.
When to use this tool
Use Historical Jurisdiction Date Offset when you need a supplied historical-date or interval comparison.
How to use the tool and how it works
- Enter recordDay, sourceCalendarOffset, referenceDay. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read normalizedDay, offsetDays. Use the output convention below.
Add sourceCalendarOffset to recordDay, then subtract referenceDay for offsetDays.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| recordDay | Record Day | Required. Safe integer. |
| sourceCalendarOffset | Source Calendar Offset | Required. Safe integer. |
| referenceDay | Reference Day | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| normalizedDay | Normalized Day | Required. Safe integer. |
| offsetDays | Offset Days | Required. Safe integer. |
{
"input": {
"recordDay": 100,
"sourceCalendarOffset": 10,
"referenceDay": 105
},
"output": {
"normalizedDay": 110,
"offsetDays": 5
}
}Limitations and assumptions
- All coordinates share a day unit and the offset is supplied. No historical-calendar conversion, jurisdictional chronology or date authenticity is derived.
- 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
Resolve the source calendar, date precision and jurisdictional context before comparison. Use a dedicated historical chronology method when calendar conversion or legal interpretation is needed.
References
Similar or alternative tools
- Charter Dual Date Interval Gap
Return secondEarliest-firstLatest, secondLatest-firstEarliest and inclusive interval overlap.
- European Cross Border Document Dual Date Label Tool
Display two explicitly transcribed calendar dates without calculating or asserting equivalence.