I've only lived in apartments, but I guess it gets back to equilibrium with outside temperature in a few hours once AC is turned off. I guess a couple hours of cheap cooling in the middle of the day might save an hour of expensive cooling later, if it's timed right. I'm interested if there have been any studies or maths to back it up and quantify the effectiveness.
I've been in houses where we shut the windows as soon as possible after sunrise, as temperatures started increasing, and the house never caught up with the outside temperature - it was cooler all afternoon, cooler until sundown. No AC needed.
I think that tactic might work well generally. Just let in the cool air at night, shut the windows and trap it. At least you can save a good part of the day's AC. It's obvious, free, and simple, but I never see it discussed.
Planning to setup a fresh air intake with an ERV to mitigate this.
https://www.greenspec.co.uk/building-design/decrement-delay/
In a well insulated place with airlock-style entrance (even just a mudroom with solid insulation on both doors) where you're blocking out sunlight and not running a ton of electronics, it could easily take hours and hours.