it may be again elsehow

Cool, thank you! I find it's a shame these words went out of use, like found out about the words "whence", "whither", "thence" and "thither", I feel using them would rid many sentences of superfluous words. But I'm sure if I did, I'd sound pretentious at best or be misunderstood at worst.

My daughter used to say, “nextday” for tomorrow, and “nextnextday” for overmorrow.

Oh yeah these are cool!

I found "elsewho" through another comment, it makes sense, I actually hesitated between typing it or "elseone". I chose the latter because you say "someone else" and not "somewho else"; but "who" is closer to "where or "when".