In order to show that a business is open 24 hours, you need to create the open hour’s specification (http://schema.org/OpeningHoursSpecification) and then add the days that it is open for 24 hours and set the “opens” properties to 00:00 and “closes” property to “23:59”.  In Schema App, your Open Hours Specification will look as follows if the business is open every day for 24 hours.   If there are days that are not open 24-hours, then you would create a different opening hours specification for them. 


Schema App Example


JSON-LD Example


{

    "@context": "http://schema.org",

    "@type": "OpeningHoursSpecification",

    "dayOfWeek": [

        "Tuesday",

        "Monday",

        "Wednesday",

        "Thursday",

        "Friday"

    ],

    "closes": "00:00:00",

    "opens": "11:30:00",

    "name": "Baker Street Normal Hours",

    "@id": "http://schemaapp.com/db/Marthas_Dare/OpeningHoursSpecification_0"

}