Noted regarding crystal clear. I mean it as a reference to the water itself as in, no detectable turbidity.Last test of the day needs to be after sunset. For you, that's 2000h today. Then the morning test needs to be at least 8 hours later, and before sunrise at 0530. Make sure your last test of the night is at least 30 minutes after your last addition of the day.
If you have visible algae patches, your water is not "crystal clear" to pass OCLT. You have a bit to go yet.
Ideally, yes. You gotta do what you gotta do - sometimes work schedules etc mean it's impossible, but now that you know the proper procedure, you can make your decision on how to handle it.Noted regarding crystal clear. I mean it as a reference to the water itself as in, no detectable turbidity.
As for sun... your saying it has to be before sunrise/after sunset and not before the sun reaches the pool, correct? My pool only really sees the sun from about 0900 until roughly 1800 due to trees and other structures.