<https://www.slsc.org/event/planetarium-live-sky-tonight-2/2021-11-13/#event>
<http://schema.org/startDate>
"2021-11-13T15:15:00-06:00"^^<http://schema.org/Date>
<https://www.slsc.org/event/planetarium-live-sky-tonight-2/2021-11-13/>