don't be worry it's only one day just give her normal 18/6 schedule she'll be fine
they took around 7-21 day to flower show so that's not a big problem hope this help you
These am already in veg. I just dont want them to start flowering all ready.
Light was 18 on 6 offm yday they had 12off . This wont make them flower will it
if it was once, then you don't have to worry..
some people also re-veg plants that were longer in flowering..
some even take cuttings from flowering plants and then re-veg them, and they can still do well.
happy growing