I think April Fools' counts as a holiday. But I really wanna know the marketing behind that. Were they like, here's an email that you can sign up for today and it'll go away tomorrow? April Fools! You're stuck with a Google account now!
It's funny how many people are seething over not getting the Gmail question correct because they think something isn't a holiday if it isn't nationally recognized
The standard list of French kings only lists 17 King Louis, because #17 is skipped: Louis XVII can be considered a claimant, but spent his entire "reign" in captivity.
I don't recall ever hearing about gmail's founding date; or other google products. I could probably guess 2005-2008, but have no idea about specifics