Robertsanswered grow question 2 years ago No, not with autoflowers. Autoflowers do not go by any light hour schedules. The more they get the better. Even if it was photoperiods, to alter a schedule it would have to be longer then 1 day for it to start effecting a plant. In your case with the autos. You just lost some grow time. Very minor. Plants like rest as well. Happy growing. Good luck. Enjoy the harvest soon.