- Utilizing rich snippets might have a tremendous impact on how your web pages perform in the search engines. The beginning day and start time on the celebration in ISO-8601 format. Increase both the day and time so users can find activities that in good shape into their agenda. For https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-google-rich-snippets-json-ld-opengraph-twitter-tags-schemaorg.html