Description
Parse strict real YYYY-MM-DD dates at UTC midnight.
Calendar-day differences need real dates and a stated time basis. Fixed clock offsets, supplied working-day lists, and Gregorian date arithmetic answer different questions.
Parse strict real YYYY-MM-DD dates at UTC midnight.
When to use this tool
Use Lending Renewal Due Date Gap when you need explicit day or clock arithmetic with known inputs.
How to use the tool and how it works
- Enter oldDue, newDue, renewalDate. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read extensionDays, renewedRemainingDays. Use the output convention below.
Parse strict real YYYY-MM-DD dates at UTC midnight. Return newDue minus oldDue and newDue minus renewalDate in days.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| oldDue | Old Due | Required. Text; maximum UTF-16 length 8192. |
| newDue | New Due | Required. Text; maximum UTF-16 length 8192. |
| renewalDate | Renewal Date | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| extensionDays | Extension Days | Required. Safe integer. |
| renewedRemainingDays | Renewed Remaining Days | Required. Safe integer. |
{
"input": {
"oldDue": "2026-10-26",
"newDue": "2026-11-09",
"renewalDate": "2026-10-25"
},
"output": {
"extensionDays": 14,
"renewedRemainingDays": 15
}
}Limitations and assumptions
- Signed gaps are allowed; time-of-day, local timezone, holidays, and borrowing rules are not modeled.
- 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 an authoritative calendar and timezone source when holidays, local dates, or civil-time transitions matter.
References
Similar or alternative tools
- Hold Pickup Window Explicit Calendar
Count open entries until requiredOpenDays and return that date, otherwise an empty deadline and found false.
- Overdue Charge Closed Day Exclusion
Subtract graceDays and closedDays from elapsedDays, multiply by dailyCharge, and cap at suppliedCap.