5
votes
1answer
851 views

Schema.org, HTML5 and the datetime format: how do I get it to validate?

Schema.org says this, The opening hours for a business. Opening hours can be specified as a weekly time range, starting with days, then times per day. Multiple days can be listed with commas ',' ...
8
votes
2answers
1k views

OpenGraph tags and HTML5 validity

I have a HTML5 based page, and I inculded the OpenGraph tags according to it's documentation. Also I checked with Facebook Debug, and it can parse the metadata. But when I use W3C Validator, it ...