It looks like it started flowering already I haven’t changed the light cycle from 18-6 yet but I did have a day where my power went out earlier for about an hr. Seeds came from a hermed plant also and are only 4 weeks old one of the plants def has flower signs.
Never grow seeds from hermie plants, they have screwy genetics.
One hour of darkness will not induce flowering.
You can't get autos from photoperiod plants.
Really she shouldn't have started flowering just from one day with the power problem. Perhaps you have ended up with an autoflower instead of a photoperiod. Good luck
Can't really see any hermie indications, but i would assume she is an auto. One day with a lighting issue won't put a photo into flower... Your plant is most likely an auto