I just want to make it night in my singleplayer world. I have um... you could call them suspicions that it is possible to make it night on either a server or singleplayer. If there happens to be a way, please tell me.

In the options, env settings, you can change the environment settings of your singleplayer world. You can find some example values here https://github.com/UnknownShadow200/MCGalaxy/blob/master/MCGalaxy/Levels/EnvPreset.cs#L31 or you can create your own colors by playing around with the values

If you're playing on a (mcgalaxy) server, you can use /env preset or /os env preset to change the map environment presets

Here's the what the values for the Midnight preset would look like in the menu

im sure there was something to do that in the code of minecraft classic but there should be a few commands to do it

Thank you guys.