It gets so hot and humid here in that 4:00 p.m. to 6:00 p.m. period, that even when I was growing here as a teenager I made sure I planted where a tree shaded my plants during that period. They'll try to transpire heavily at that time of day but the humidity will be too high for it to evaporate and they'll actually sweat Right into their own flowers here . For best results you have to shade them during that period here.
I also noticed back then that a plant getting 7 hours of direct sunlight yielded pretty much the same as a plant getting 10. And I actually got a lot less pm and rot on the plants only getting seven, because they were a lot more open airflow and light penetration both. Slightly stretch your plant will develop further down into the canopy more fully than a super tightly node spaced plant outdoor usually. You get 2 ft further from an LED and that's bad, but if you're 2 foot further from the Sun that's meaningless
taking that into account my plants being shaded between 4:00 and 6:00 p.m. you'll did substantially more than my plants getting more like 10 hours back then.
Burning my eyes while pressure washing recently had me thinking about the way moisture refracts light though
And I'm at high elevation, usually when it gets overcast I'm kind of in the bottom of the clouds and it's a little foggy, I'm not just way beneath them. And on those days my plans are getting just as much light when the sun is behind that tree as they are when it's not and it's coming from every angle.
So weirdly enough I'm pretty sure in my context growing, an overcast day is better than a sunny day actually

