The {{Monthyear}} template takes no parameters and returns the name of the month and the year, like this:

{{Monthyear}} renders: December 2024

Note that the same date can be shown for up to a week on a page since Wikipedia caches pages and only re-renders them under one of the follow circumstances:

  1. Someone visits the page and it has not been re-rendered in a week;
  2. Someone visits the page and manually purges or edits it.

See also

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You can do this yourself

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The code for this template is very simple! Just type

{{#time:F Y}}

See here to learn more about time parser functions.