Welcome to the Q&A Forum

The event does not have all required information in the eyes of Google. Will that harm the site? If a lot is missing YES you need dates. http://i.imgur.com/gT3JDhw.png Raw structured data extracted from the page: http://linter.structured-data.org/?url=https:%2F%2Fwww.woorank.com%2Fen%2Fblog%2Frich-snippets-what-why-and-how-to-implement http://linter.structured-data.org/ http://www.seoskeptic.com/structured-data-markup-validation-testing-tools/ http://json-ld.org/playground/ https://www.woorank.com/en/blog/rich-snippets-what-why-and-how-to-implement gT3JDhw.png