Day Night Cycle

local Lighting = game:GetService("Lighting")
local RunService = game:GetService("RunService")

local DAY_LENGTH = 120 
local START_TIME = 12 
local CURRENT_TIME = START_TIME
local TIME_SPEED = 24 / DAY_LENGTH 

Lighting.ClockTime = CURRENT_TIME
Lighting.GeographicLatitude = 30 
Lighting.Brightness = 1.5
Lighting.FogColor = Color3.fromRGB(180, 190, 210)
Lighting.OutdoorAmbient = Color3.fromRGB(128, 128, 128)
Lighting.Ambient = Color3.fromRGB(60, 60, 60)
Lighting.GlobalShadows = true
Lighting.ExposureCompensation = 0.25

while true do

	CURRENT_TIME = CURRENT_TIME + TIME_SPEED * RunService.Heartbeat:Wait()

	if CURRENT_TIME >= 24 then
		CURRENT_TIME = 0
	end

	Lighting.ClockTime = CURRENT_TIME

	if CURRENT_TIME >= 6 and CURRENT_TIME < 18 then
		Lighting.Brightness = 1.5
		Lighting.FogColor = Color3.fromRGB(180, 190, 210)
		Lighting.OutdoorAmbient = Color3.fromRGB(128, 128, 128)
		Lighting.Ambient = Color3.fromRGB(60, 60, 60)
		Lighting.ExposureCompensation = 0.25
	else

		Lighting.Brightness = 0.1
		Lighting.FogColor = Color3.fromRGB(10, 10, 20)
		Lighting.OutdoorAmbient = Color3.fromRGB(30, 30, 50)
		Lighting.Ambient = Color3.fromRGB(20, 20, 40)
		Lighting.ExposureCompensation = -0.5
	end

	if CURRENT_TIME >= 5 and CURRENT_TIME < 7 then
		local progress = (CURRENT_TIME - 5) / 2
		Lighting.Brightness = 0.1 + (1.4 * progress)
		Lighting.FogColor = Color3.fromRGB(
			10 + (170 * progress),
			10 + (180 * progress),
			20 + (190 * progress)
		)
		Lighting.ExposureCompensation = -0.5 + (0.75 * progress)
	end

	if CURRENT_TIME >= 17 and CURRENT_TIME < 19 then
		local progress = (CURRENT_TIME - 17) / 2
		Lighting.Brightness = 1.5 - (1.4 * progress)
		Lighting.FogColor = Color3.fromRGB(
			180 - (170 * progress),
			190 - (180 * progress),
			210 - (190 * progress)
		)
		Lighting.ExposureCompensation = 0.25 - (0.75 * progress)
	end
end