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))))
or
((which calendar|date=August 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
TemplateData for Which calendar
For tagging ambiguous dates which might plausibly be interpreted differently according to multiple calendars in use at the time.
Parameter | Description | Type | Status | |
---|---|---|---|---|
Link target | link | Change what "which calendar?" text links to
| Page name | optional |
Month and year | date | Month and year of tagging; e.g., 'January 2013', but not 'jan13'
| String | suggested |