Why doesn't this if statement work properly?

For some reason the script totally disregards the else statement as if it weren't there:

lighting = game:GetService("Lighting")
clock = lighting.ClockTime
bloom = Instance.new("BloomEffect")
color = Instance.new("ColorCorrectionEffect")
rays = Instance.new("SunRaysEffect")
while true do
    wait(0.01)
    if clock >6 and clock <18 then
        bloom.Enabled = true
        bloom.Intensity = 0.1
        bloom.Size = 56;
        bloom.Threshold = 0.6
        bloom.Parent = lighting
        color.Enabled = true
        color.Brightness = 0.05
        color.Contrast = 0.2
        color.Saturation = 0.7
        color.TintColor = Color3.fromRGB(255,255,255)
        color.Parent = lighting
        rays.Enabled = true
        rays.Intensity = 0.3
        rays.Spread = 1
        rays.Parent = lighting
        lighting.Ambient = Color3.new(0,0,0)
        lighting.Brightness = 1;
        lighting.ColorShift_Bottom = Color3.new(0,0,0)
        lighting.ColorShift_Top = Color3.new(0,0,0)
        lighting.OutdoorAmbient = Color3.new(127/255,127/255,127/255)
        else
        color.TintColor = Color3.fromRGB(54,54,54)
    end
end

And please, before you say something like, "line 2 clocktime won't change" just know that I created a while true do loop with :SetMinutesAfterMidnight() that loops it from 12 and back with an interval of 1 minute/second.

Things I've tried: Since else seemed to not work, I tried elseif which would seem redundant, but what else am I supposed to do? I've also tried using spawn(f) to just get rid of the else altogether, but that still doesn't work.