Well it's official: Trials of Mana, a game remaking SNES classic Seiken Densetsu 3 features day-night cycle. And this game doesn't.
..So? Was there a point to be made in your comment? Oh dear! A game in a totally different engine with a totally different play-style and made by a totally different crew has a feature BG3 does not!
Trials of Mana is also going to have an inventory wheel, and a magic wheel. BG3 does not have those!
My point is that technical "impossibilities" is an excuse beyond risible.
Not every engine can do what another engine can do. hence why I pointed out that ToM is a different engine.
That said, I think no day/night is a CHOICE by Larian, not an engine limitation? Someone please correct me, if I'm wrong.