<https://isppan.waw.pl/kalendarz/#webpage>
<http://schema.org/dateModified>
"2020-10-19T11:06:51+00:00"^^<http://schema.org/Date>
<https://isppan.waw.pl/kalendarz/?time=week&yr=2022&cid=my-calendar&format=list&dy=1&month=08&mcat=8,11,12>