The second one is more familiar and looks better to me.
0 voted
August 24, 2020
0
Answered
"Someday" is “at an indefinite time in the future.” "Some day" refers to a day that is perhaps unknown or unspecified." This is according to Google. I'm not sure which one John Lennon meant to use, perhaps the first one?
0 voted
July 23, 2020
0
Commented
Hello Sebastian, I am a specialist in accents and dialects of British English and I'd like to help you learn about them. Send me a message if you're interested.
I am a professional teacher and I am not looking for a language exchange.