On this side of the pond, we're busy renaming Columbus Day "Indigenous Peoples' Day".

So with that background, I'm leery of offering congrats on Battle of Hastings. Who would the Congrats be to? Normans, the English Language, certain Lords and Ladies? The.........French?

So I think I'll just send best wishes to England entire and congratulations on a successful observance 'any way you want to observe it'.

Maybe you need the kind of monument with two sides on it like that one on a Hawaii Beach which commemorates the life of Captain Cook on one side, and the noble people who boiled his skin off his bones on the other.