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Immigration, Visa & Travel DocumentsGenerated accuracy model review: 2026-05-06
Days Outside the U.S. Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- Total days outside = sum of max(return date - departure date, 0) for each entered trip. Days before threshold = threshold - total days outside.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Trip 1 Departure Date: 2026-01-10
- Trip 1 Return Date: 2026-01-20
- Trip 2 Departure Date: 2026-04-01
- Trip 2 Return Date: 2026-04-12
- Trip 3 Departure Date: 2026-08-01
- Trip 3 Return Date: 2026-08-08
- Planning Threshold: 180 days
Expected outputs
- Estimated Days Outside the U.S.: 28 days
- Days Before Threshold: 152 days
- Threshold Status: Within entered planning threshold
Known limitations
- This calculator does not decide continuous residence, physical presence, abandonment, visa eligibility, naturalization eligibility, or any official immigration outcome.
Assumptions
- Departure dates and return dates are entered by the user.
- The return date is excluded from outside-day counting in this planning model.
- This is a planning estimate only, not legal advice, not an official immigration, travel, school DSO, USCIS, CBP, consulate, employer, or government determination.
Unit handling
- Trip 1 Departure Date accepts calendar dates.
- Trip 1 Return Date accepts calendar dates.
- Trip 2 Departure Date accepts calendar dates.
- Trip 2 Return Date accepts calendar dates.
- Trip 3 Departure Date accepts calendar dates.
- Trip 3 Return Date accepts calendar dates.
- Planning Threshold accepts values in days.
- Estimated Days Outside the U.S. is displayed in days.
- Days Before Threshold is displayed in days.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current days-outside-the-us-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Days Outside the U.S. Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.