Along the line…
I have used a Magic Bllet created night effect as a top layer (or bottom layer)… kind of depends…. you need to experiment.
Then use the original as a second layer…
Change the opacity to help manage the night effect. A lot of the problems have to do with shadow changes and backlighing (or lack of backlighting) that changes throughout the video.
This is faster because you are starting from a layer that has the basic “night” characteristics that Magic Bullet created.
This method takes time… but, (to me) it seems to be faster than just starting from scratch and trying to add layers with various color adjustments.
No matter how you slice it… this day to night thing will take a lot of time and probably not look as good as you would like.
Joe