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| | 5. **Source fidelity:** Formatting must not alter the original wording, spelling, punctuation, sequence, or meaning. Do not silently translate or correct foreign-language text; record suspected errors separately for editorial review. | | 5. **Source fidelity:** Formatting must not alter the original wording, spelling, punctuation, sequence, or meaning. Do not silently translate or correct foreign-language text; record suspected errors separately for editorial review. |
| | 6. **Consistency:** Apply these conventions throughout the page, including footnotes, quotations from cited authorities, and passages embedded within Newton's own prose, wherever the source formatting permits. | | 6. **Consistency:** Apply these conventions throughout the page, including footnotes, quotations from cited authorities, and passages embedded within Newton's own prose, wherever the source formatting permits. |
| | + | |
| | + | ==Date System and Calendar Conventions== |
| | + | 1. **Default calendar:** Use the Gregorian calendar for dates throughout information panels, biographical summaries, indexes, and editorial notes wherever a reliable Gregorian date can be established. |
| | + | |
| | + | 2. **Julian dates:** If a reliable Gregorian equivalent is unavailable or cannot be established with sufficient confidence, retain the Julian date and explicitly identify it as **Julian**. Do not leave readers to infer which calendar is being used. |
| | + | |
| | + | 3. **Avoid ambiguous terminology:** Do not use *Old Style* (O.S.) or *New Style* (N.S.) as date labels. These expressions can refer to calendar differences, differences in the beginning of the year, or both, and may confuse general readers. |
| | + | |
| | + | 4. **Historical year numbering:** When converting dates from historical English records, account for differences in the beginning of the year as well as differences between the Julian and Gregorian calendars. A date may require a change of year as well as a change of day and month. |
| | + | |
| | + | 5. **Source fidelity:** Preserve dates exactly as they appear in the original source text. Do not silently convert, modernise, or replace a date within the transcribed text. Calendar conversions belong in editorial material or supplementary biographical information, not in the original text itself. |
| | + | |
| | + | 6. **Information panels:** Prefer a single Gregorian birth or death date rather than displaying multiple calendar equivalents. Include a Julian date only when a reliable Gregorian equivalent cannot be established, and label it explicitly as Julian. |
| | + | |
| | + | 7. **Uncertainty:** Do not calculate or assert a converted date when the relevant calendar, year convention, or historical evidence is uncertain. Flag the uncertainty for editorial review rather than presenting an unverified conversion as fact. |
| | + | |
| | + | 8. **Consistency:** Apply these conventions uniformly across all pages in the Original Source Project, including author information panels, publication dates, historical events, indexes, and editorial reviews. |
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| | ==Mandatory Internal-Link Audit== | | ==Mandatory Internal-Link Audit== |