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Pages only update when they are purged. That normally happens when someone edits a page and saves a change. If no change is needed but you need to update the page, click edit at the top and then Publish. Do not enter an edit summary. Nothing appears to happen (there is no change to the page history) but the displayed page is regenerated and that means all the templates are re-evaluated. That will cause the correct date calculations to be used. Johnuniq (talk) 09:21, 7 March 2024 (UTC)[reply]
@Johnuniq: What you describe (click edit, make no changes and save) is not a purge but a WP:NULLEDIT. Whilst this will work to update an age, it's not required - a WP:PURGE is sufficient. That page describes some ways of carrying out a purge. Personally I've enabled "Add a "Purge" option to the top of the page, which purges the page's cache" at Preferences → Gadgets. --Redrose64 🌹 (talk) 22:42, 8 March 2024 (UTC)[reply]