Can someone explain to me how to edit this script to make it Darker?

it does run, but day is to bright and night is not dark enough

local timer = game.Lighting
local delay = script.Delay

repeat
	timer:SetMinutesAfterMidnight(timer:GetMinutesAfterMidnight()+1)
	x = timer:GetMinutesAfterMidnight()
	if x < 720 then
		light = x*17/(255*48)
	else
		light = (1440*17)/(255*48)-(x*17)/(255*48)
	end
	timer.Brightness = light
	if x > (1440 - script.LightLimit.Value) then
	local lightLimit = (1440*17)/(255*48)-(1260*17)/(255*48)
	timer.OutdoorAmbient = Color3.new(lightLimit,lightLimit,lightLimit)
	print(lightLimit)
	elseif x < script.LightLimit.Value then
	local lightLimit = 180*17/(255*48)
	timer.OutdoorAmbient = Color3.new(lightLimit,lightLimit,lightLimit)
	print(lightLimit)
	else
	timer.OutdoorAmbient = Color3.new(light,light,light)
	print(light)
	end
	print(timer:GetMinutesAfterMidnight())
	if delay.Value==0 or delay.Value<0 then
		wait(1)
	else
		wait(delay.Value)
	end
until 1==0