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| ==Specific cases== | | ==Specific cases== |
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| ===<span id="Chronological items"></span><span id="Year linking"></span><span id="Month-and-day linking"></span>Linking month-and-day or year===
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| {{shortcut|WP:DATELINK|WP:YEARLINK}}
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| Month-and-day articles (e.g. [[February 24|February 24]] and [[July 10|10 July]]) and year articles (e.g. [[1795]], [[1955]], [[2007]]) should not be linked unless the linked date or year has a significant connection to the subject of the linking article, beyond that of the date itself, so that the linking enhances the reader's understanding of the subject.
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| For example:
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| *The date (or year) should not be linked in a sentence such as (from [[Sydney Opera House]]): "{{xt|The Sydney Opera House was made a UNESCO World Heritage Site on 28 June 2007}}", because little if any content of either [[June 28|June 28]] or [[2007]] is germane to either UNESCO, World Heritage Sites, or the Sydney Opera House.
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| *The years of birth and death of architect [[Philip Johnson]] should not be linked, because little if any content of [[1906]] or [[2005]] enhance the reader's understanding of Johnson or his work.
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| *[[Timeline of World War II (1942)]] might be linked to from another article about WWII
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| *[[1787 in science]] might be linked from a passage discussing a particular development in the metric system which occurred in that year.
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| However, in intrinsically chronological articles ([[1789]], [[January]], and [[1940s]]), links to specific month-and-day, month-and year, or year articles are not discouraged.
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| Commemorative days ([[Saint Patrick's Day]]) are not considered month-and-day items for the purposes of the above.
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| ==={{anchor|Units}} Units of measurement that are not obscure=== | | ==={{anchor|Units}} Units of measurement that are not obscure=== |