Elias Mårtenson on Nostr: Someone posted the very funny and also thought-provoking joke that the most common ...

Someone posted the very funny and also thought-provoking joke that the most common national celebration is independence from the British, being celebrated by 65 different countries.

Which 65 is crazy high for an independence celebration, it's definitely not the most common celebration. International Workers Day is celebrated by 110 countries if I'm getting my count right. Are there any others that are more widely celebrated than that? (excluding religious holidays)