No. I only know about it because it is sometimes used in tennis to describe the lengths of Grand Slams. I've never heard someone say it in real life.

No. I've heard it before but forgot what it means.

No, no one uses that anymore.

No

Yes.

No, sounds Shakespearean.

Yes it's completely normal in Australia.

No, Idek what it means

I voted yes, but that was before I read the question My country does not use fortnight, but I do to be funny from time to time.

No, I'm American. I only know what it means from British literature/sometimes I'll hear it in period movies.

Yes I'm a hipster

Yes, how else am I meant to refer to a period of two weeks using only one word? (Scotland, since it's a poll of how local)

Though ask me again Overmorrow and I might have a different answer, as I did Ereyesterday.

I use it only in a tennis context

Never heard it used outside of it

I read Harry Potter which is the first time I saw it, but we don't use that phrase in the U.S.

No, I don't think i've ever heard somebody use that casually in a sentence.

We do.