RS himself mentions today's commemoration on his Facebook page and I think I've posted here in the Forum about it before, so I'm surprised it doesn't get some discussion here every year --
https://web.gencat.cat/en/actualitat/reportatges/diada-nacional-de-catalunya/
Catalunya formally observes the end of the War of the Spanish Succession in 1714 on 9/11,
as their Diada Nacional,
which in some ways seems peculiar because it was a defeat, not a victory.
This year's observance includes recognition of the victims and caregivers in the current pandemic.