Google now recommends that you use the Opening Hours Specification to add hours to your Local Business or Organization. To do this, create a data item for the property Opening Hours Specification. Click Save. Click on the new Opening Hours Specification Data Item. Now you want to add the details for Opens and Closes Hours, and the Days of the Week it applies to. If there is different hours for different days, you will need to create an Opening Hours Specification for each group of days. Watch this video tutorial for how to add them.