Need to switch my light schedule

im in my 3rd week of 12/12 and my lights come on in the morning and go off at night...i need to switch so they come on at night and go off in the morning...will it hurt to switch or will it be ok?

I've done it several times, never had a problem. I've got no science behind this, but the way I do it is to wait until its halfway through a lights-on cycle, shut the lights off and switch the timers. They'll come back on six hours later and resume their normal schedule.

I just cut out the entire light cycle then go turn em back on for the new light cycle . Never had a problem

I was thinking when the lights go out id unplug till i want them to come back on...basically they would have a 24 hour dark period

^^^ That's what I did last time^^^