I found a bad solution for my problem. I modify standart cloud material and multiply the same texture that used for albedo with LightIntencity float (0,000015) variable and attached It to Emissive Color of material.
I added blueprint which set LightIntensity to 0,000015 at nighttime and set LightIntensity to 0 at daytime.
It’s okay for me I think but It’s still a bad solution because you can’t show your clouds in black colors like in real life, any black colors on clouds just make them transparent that means they don’t hide the stars or moon behind them. I think that I’ll add some blueprint which will make LightIntensity of stars less when too much clouds…
