Can i change dark time from night to day?

Im at the last weeks of flowering. Lights are turning off at 9 at night, and on at 9 in the morning. Can i change it around, give it an extra 12 hours of dark tomorrow, and turn light on 9 at night tomorrow?

Yes, you can. Is there a specific reason you want to do this though?

7 days left in flower...why even bother changing the time?

You probably can if you only have 7 days left, but if you tried this earlier in flower, your plants would FREAK OUT bigtime. Imagine if the sun didn't come out for a whole day, and then started coming out at 6PM, and getting dark at 6AM? Think that might throw off your schedule a little bit?

Because of *reasons*.

Thanks for the helpful replies