That's my point, I'm not talking about real world logic. The author is going to show a moon at night and the Sun during the day in his manga, because it's easily conveyed on paper this way.
Imo, 992 was just the start of the festival. We see it literally just beginning then. That's when people started drinking and playing music. Check the scene out. You'd think that the citizens of Wano, people who only get to party once a year, would start around the moment it becomes night, which it's implied they did.
It literally could not be more than a few hours from that point to where we are now. Hence, I believe it's actually the dead of night. We still have hours to go before dawn. And that's fine, because Luffy's battles tend to take half a year to finish anyway lol, and we still have like 8-9 additional enemies to drop, and that's not even including potential threats like the additional Numbers, CP-0 or even the BMP if they show up when the island crashes.
Plus, we also have to remember that Oda can very easily shift scenes to Nami/Usopp or Brook/Robin or Franky or Jinbe, just as easily as he can focus on fights that aren't King or Queen just yet.
I said this before, but see how the spoilers don't even give us one attack name? It implies the chapter is mostly a dialogue drop/lore dump with potentially some skirmishing. It also might not be more than half a chapter, with the rest of it being the other fight scenes.