Because the builtin calendar doesn't have such an option.
|Previous Month Link Show 404 error||1||MediaGurus||1 year|
|When I click on the links within the calendar it says can't find any posts||1||noralin||1 year|
|Not working||1||kharlo||1 year|
|Custom date filed||1||stankobrin||1 year|
|[resolved] Incorrect calendar link URLs||2||serons||2 years|
|[resolved] Showing posts from calendar||7||Cristiano||2 years|
WordPress › Support » WordPress Calendar For Custom Post Types
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