<http://schema.org/description>
"I have no idea if this is old or not, but I have never seen it myself until today.  When you search for [sunrise] or [sunset] on Google, Google will give you a onebox result with the sunrise or sunset"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/022422.html>