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Time & Date Formula Verification

6 of the 6 published time & date calculators have an automated formula test suite. Each row gives one calculator's passing cases and the kinds of check behind them.

Last updated 16 September 2026

This is the time & date section of the formula verification report, which explains what each kind of case tests, how the counts are produced and what they do not prove. Rows run from the largest suite to the smallest; each row's address ends in the calculator's slug, so one calculator's evidence can be linked and cited on its own. The test file behind every row, and the per-kind numbers, are in the machine-readable report.

Every time & date calculator, with its case mix

Automated formula-test coverage for the Time & Date calculators: passing cases and case mix per calculator
CalculatorCasesCase mix
Time Unit Converter706 independent · 18 golden · 11 boundary · 26 property · 9 structural
Days Calculator4027 golden · 10 boundary · 2 property · 1 structural
Age Calculator3713 golden · 24 boundary
Timesheet Calculator3722 golden · 7 boundary · 3 property · 5 structural
Time Zone Converter2816 golden · 5 boundary · 4 property · 3 structural
Time Percentage Calculator2514 golden · 6 boundary · 5 structural
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Questions about this policy?Published by Calculator Matters (calculatormatters.com). Last reviewed 16 September 2026. Created and maintained by Jay Sudha (about Calculator Matters). These pages are reviewed regularly, and questions are always welcome.
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Educational estimate — not financial, tax, legal, or professional advice. Formulas and assumptions are shown on the page above.