I’m a new member please help me 
there isn’t a game feature to do that. Short of messing with game code, which I think is not possible at that level atm. I believe your stuck with what the game gives.
Buy Nighthawk potions, for the night missions. (If you brew them you can make three for like 50G)
Always keep a torch on you in the cities.
Sleep until day for anything else.
To Me it seems the potion got nerfed. Last playthrough and 1.6 Nighthawk when taken would let me see slightly better than a full moon night. Now It doesn’t seem to help much.