# International Date and Number Check

Validate localized dates, time zones, currencies, units, decimal and thousands separators, numerical ranges, plural forms, and conversion precision.

## Usage note

Use this check on the rendered locale experience and its data source, not only on translated strings. Preserve original values and document every conversion. For financial, legal, scientific, medical, tax, contractual, or safety-critical values, obtain the qualified review required for that context. A locale library can format a value correctly while the underlying number, zone, or business rule remains wrong.

## How to use this template

1. Inventory every localized date, time, duration, currency, measurement, percentage, range, and quantity.
2. Capture authoritative source value, unit, zone, currency, period, and precision.
3. Verify conversion, rounding, separators, ordering, plural grammar, and labels for the target locale.
4. Test boundaries plus every rendered and downloadable surface.
5. Resolve discrepancies with qualified owners and document ongoing update triggers.

## Blank template

### Value record

- **String or field ID:** [Stable identifier]
- **Target locale:** [Locale code and region]
- **Content surface:** [Page, form, email, chart, PDF, export]
- **Value type:** [Date, time, currency, unit, percentage, range, count]
- **Source value:** [Unformatted original]
- **Source unit/currency/zone:** [Exact]
- **Effective date or period:** [If relevant]
- **Required precision:** [Decimals or significant figures]
- **Authoritative owner:** [Product, finance, data, policy, other]

### Localized display

- **Displayed value:** [Exact rendered output]
- **Format rule:** [Date order, separators, symbol placement]
- **Conversion factor:** [Source and date or None]
- **Rounding method:** [Rule]
- **Plural or grammatical form:** [Full phrase]
- **Ambiguity risk:** [Symbol, date order, range, negative, zone]
- **Boundary tests:** [0, 1, fraction, negative, large, transition]
- **Decision:** [Approve, revise, escalate]

### QA checks

- [ ] Underlying values were verified before formatting.
- [ ] Dates avoid ambiguous numeric presentation where risk matters.
- [ ] Time zones and daylight-saving behavior are explicit.
- [ ] Currency code, billing basis, and tax assumptions are clear.
- [ ] Conversions preserve justified precision.
- [ ] Separators and ranges remain clear in inputs and exports.
- [ ] Plural and agreement rules are tested in complete strings.
- [ ] Web, email, document, chart, and assistive text agree.