<https://lighthouse-sf.org/calendar/>
<http://schema.org/dateModified>
"2024-09-29T00:21:44+00:00"^^<http://schema.org/Date>
<https://lighthouse-sf.org/calendar/?time=day&month=01&yr=2021&cid=lighthouse-events&dy=10&mcat=18,3,21,28,23,2>