My day night script isn't working, it's inside workspace by the way, why isn't it working?

local Day = script.Parent:FindFirstChild("Day")
local Night = script.Parent:FindFirstChild("Night")
local Time = script.Parent:FindFirstChild("NewTime")
local ct = game.Lighting.ClockTime

while true do	
	Day.Playing = false
	Time.Playing = true
	Time.Looped = false
	Night.Playing = true
        ct = 12
	print("time changed")
wait(10)
	Day.Playing = true
	Time.Playing = false
	Time.Looped = false
	Night.Playing = false
        ct = 4
	print("time changed")
wait(60)
end