Optional@typeThe type of operation hours
OptionalclosesThe time the operation hours end
OptionaldayThe days of the week the operation hours apply to
OptionalopensThe time the operation hours start
OptionalvalidThe date the operation hours start, in ISO 8601 format
OptionalvalidThe date the operation hours end, in ISO 8601 format
We (almost) follow this schema (http://schema.org/OpeningHoursSpecification) The only difference is that we (like Google: https://developers.google.com/search/docs/data-types/local-businesses) accept dayOfWeek as an array as well as an individual day.