Dick is correct.
I've got a NVFR rating and all it means is doing the flight review at night instead of the day. It's not a big deal.
Not so. I'm also NVFR rated and did a flight review late in 2017, at night, as I had done several times before. The instructor was unaware that the rules had changed with part 61 and a night (NVFR) flight review no longer covered day VFR. A day or two later I was rung by the instructor whose CFI had explained the new rules. I had to return and do another flight review in the day.
In subsequent discussions, it seems that in future my NVFR flight review should be scheduled to take off an hour or so before last light, and finish after darkness. Seems crazy, but that's how it is now.