The day of the week, e.g. used to specify to which day the opening hours of an OpeningHoursSpecification refer.<br/><br/> Originally, URLs from <a href="http://purl.org/goodrelations/v1">GoodRelations</a> were used (for <a class="localLink" href="http://schema.org/Monday">Monday</a>, <a class="localLink" href="http://schema.org/Tuesday">Tuesday</a>, <a class="localLink" href="http://schema.org/Wednesday">Wednesday</a>, <a class="localLink" href="http://schema.org/Thursday">Thursday</a>, <a class="localLink" href="http://schema.org/Friday">Friday</a>, <a class="localLink" href="http://schema.org/Saturday">Saturday</a>, <a class="localLink" href="http://schema.org/Sunday">Sunday</a> plus a special entry for <a class="localLink" href="http://schema.org/PublicHolidays">PublicHolidays</a>); these have now been integrated directly into schema.org.