Best time to change start of 12/12 timing?

eScott

New Member
I have 4 plants that are in their 4th/5th week under 12/12 lighting.
Due to my schedule I need to shift the on/off times an hour. I want to shift the whole cycle to one hour earlier, so I have the options of cutting the daytime or night time one hour short one time.
I'm guessing switch it after an 11 hr daylight phase so they never get less than 12 hrs darkness? Am I thinking right or am I just high? LOL

:scratchinghead:
Cheers!
 
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