Help needed.

I believe my lights were on during their 12 off cycle last night. They are 40 days into flowering. Could someone please tell me if they are ruined?

they should be ok....just get back to reg. cycle and hope for the best

yeah, best you can do is just get it back on schedule and keep an eye open for pollen sacks in case it hermies. usually your biggest concern is the plant revegetating, but this is unlikely in the case of one missed dark cycle.