The top day and end time with the celebration in ISO-8601 format. Use the exact same format as startDate. Insert both the date and time so users can discover functions that suit into their routine. For online functions, you have to specify the timezone by such as the UTC or https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html