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Usage[edit]

The ((Which calendar)) template is a variant of ((Clarify)) to be used specifically when the clarification that is needed is the calendar in which a particular date is expressed.

At various times in modern history, multiple calendars were in use at the same time. Therefore, in an article on Russian history, a date such as "March 1, 1881" may be ambiguous: it might mean March 1 [O.S. March 13] 1881, or it might mean February 17 [O.S. March 1] 1881.

You may use either of the following formats:

((which calendar|((subst:DATE))))

((which calendar|date=May 2024))

This template will place articles into Category:Articles containing ambiguous dates.

To fix the issue, use the ((OldStyleDate)) template to clarify the meaning of the date:

((OldStyleDate|March 1|1881|March 13))

which produces

March 1 [O.S. March 13] 1881

TemplateData[edit]

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Which calendar in articles based on its TemplateData.

TemplateData for Which calendar

For tagging ambiguous dates which might plausibly be interpreted differently according to multiple calendars in use at the time.

Template parameters[Edit template data]
This template prefers inline formatting of parameters.
Parameter		Description	Type	Status
Link target	`link`	Change what "which calendar?" text links to Default MOS:OSNS	Page name	optional
Month and year	`date`	Month and year of tagging; e.g., 'January 2013', but not 'jan13' Auto value `((subst:CURRENTMONTHNAME)) ((subst:CURRENTYEAR))`	String	suggested

Redirects[edit]

See also[edit]

Inline cleanup tags

Attribution

Clarity

Miscellaneous

Neutrality

Precision

((By how much)) ((Definition)) ((Definition needed)) ((Example needed)) ((Example needed span)) ((Explain)) ((How)) ((How often)) ((Misquoted)) ((Quantify)) ((Specify)) ((Vague)) ((When)) ((Where)) ((Which)) ((Who else)) ((Why)) ((Year needed))
Excessive	((Overly detailed inline)) ((Duplication span)) ((Importance inline)) ((Relevance inline)) ((Undue weight inline)) ((Globalize inline))

Time-sensitivity

Verifiability

Dubious	((Contradictory inline)) ((Disputed inline)) ((Dubious)) ((Dubious span)) ((Inconsistent)) ((Needs independent confirmation)) ((Speculation inline))
Bare URLs	((Bare URL inline)) ((Bare URL non-HTML)) ((Bare URL AV media)) ((Bare URL PDF)) ((Bare URL image)) ((Bare URL DOC)) ((Bare URL plain text)) ((Bare URL spreadsheet))
Incomplete or broken citation	((Author incomplete)) ((Author missing)) ((Date missing)) ((Dead link)) ((Edition needed)) ((Episode needed)) ((Full citation needed)) ((Incomplete short citation)) ((ISBN missing)) ((Moved resource)) ((Page needed)) ((Place missing)) ((Publisher missing)) ((Season needed)) ((Time needed)) ((Title incomplete)) ((Title missing)) ((Volume needed)) ((Year missing))
Missing or problematic reference	((Additional citation needed)) ((Better source needed)) ((Better source needed example)) ((Check quotation)) ((Chronology citation needed)) ((Circular reference)) ((Citation needed)) ((Citation needed span)) ((Citation not found)) ((Close paraphrasing inline)) ((COI source)) ((Deprecated inline)) ((Excessive citations inline)) ((Failed verification)) ((Failed verification span)) ((Image reference needed)) ((Irrelevant citation)) ((Medical citation needed)) ((Medical citation needed span)) ((Nonspecific)) ((Not verified in body)) ((Obsolete source)) ((Page range too broad)) ((Primary source inline)) ((Promotional source)) ((Quote without source)) ((Request quotation)) ((Request quotation span)) ((Retracted)) ((Scientific citation needed)) ((Self-published inline)) ((Tertiary source inline)) ((Third-party inline)) ((Unreliable fringe source)) ((Unreliable medical source)) ((Unreliable source?)) ((Verify quote)) ((Verify source))

Wording

General advice

The above documentation is transcluded from Template:Which calendar/doc.
Editors can experiment in this template's sandbox and testcases pages.
Add categories to the /doc subpage. Subpages of this template.