My lights won't turn off at night?

So basicly, I've been working on my prison game, but the lights for the yard won't turn off at the night. The material changes great. Here's the script:

while true do wait(5)


for i, v in pairs(game.Workspace:GetChildren()) do
    if v.Name == "NeonPart" then
        v.Material = "Neon"
    elseif v.Name == "LightPart" then
        v.SpotLight.Enabled = true
    end
end

game.Lighting.TimeOfDay = "00:00:00"
game.Lighting.GlobalShadows = false
wait(5)

for i, v in pairs(game.Workspace:GetChildren()) do
    if v.Name == "NeonPart" then
        v.Material = "SmoothPlastic"
    elseif v.Name == "LightPart" then
        v.SpotLight.Enabled = false
    end
end

game.Lighting.TimeOfDay = "12:00:00"
game.Lighting.GlobalShadows = true
end

Please note when giving answer, I'm still a beginner with scripting