Why “di” in “Un bel di, vedremo”?

Question

I was wondering why “di” is translated as “day” in English in “Un bel di, vedremo”?

Answer 1

Because the correct spelling is Un bel dì vedremo, dì with the accent, not di.

And dì in Italian means day.

See https://www.treccani.it/vocabolario/di/

Di without accent is the preposition:

https://www.treccani.it/vocabolario/di1/