is it ok to switch from 12/12 night to day cycle??

[jamstigator]

I've done it before, two different ways. I left them in dark for 24 hours once, and that worked okay. The other time, I moved the time forward an hour out of each 12. In other words, I went to 11/11 until it cycled around to the times I wanted for 12/12, then went back to 12/12. That worked too, and is probably less stressful on the plants.