When I get to it, about 3-4 nights per week, I turn off the lights for ~5-6 hours while I sleep. I haven't noticed any problems I could attribute to these irregular periods of darkness (not daily and not exact same times daily). But I also can't identify any specific benefits from dark periods. I just presume, based on all the diverse comments I've seen on AFN, that some darkness thrown in is overall good (or does no harm, while saving money) with autos.
I presume with autos it's more a matter of daily or other cumulative light dosage, with daily consistent exact scheduling of off times not required. Am I right or wrong about this?