Should I leave the lights on?

[MickFoster]

I am in my 3rd week of 12/12 and my plants are in a separate room that is closed off during the plants night. I control the environment with a small a/c unit and a dehumidifier. During the plants day I shut off the ac and dehumidifier and open the doors to the house. I am unable to run the ac, dehum, lights and fans at the same time due to blowing a fuse. In a few days I won't be home until 4 hours after the lights are to come on and I want to know if it would cause a problem to leave the lights off for the additional 4 hours, then resume their regular schedule the next day?

 

[I wood]

Shouldn't bother them at all.
I've extended the dark period many times for different reasons without any noticeable effects.
Do it often or for longer periods and yields can suffer due to a quicker finish.

 

[Douglas.Curtis]

What I wood said.