A machine-readable date is how freshness is judged. Without one the page is undated, and undated tends to be read as old.
The finding reads:
info no-date no machine-readable published or updated dateAdd a machine-readable date — in JSON-LD or in the front matter.
Collapsed when it fires template-wide. If it appears on 90% or more of the pages — or of one language version — of a site with at least 20 pages, it is a property of the template and is reported once, with the count, instead of once per page.
pipx install indexgap
cd your-project
indexgap init
indexgap checkThen indexgap brief turns
every finding on this page into a work order in indexgap-briefs/,
with the thresholds the result has to satisfy and the command to check it.