What is wrong with my SpotLight script?

So... after I added a day/night cycle script to my game, I made a light column with SpotLight. Then I added a script to the SpotLight to make it opens at a specific time(19:00:00) and closes at(5:00:00). The script is not working, here is it:-

game.Lighting.Changed:connect(function()
	local myTime = game.Lighting.TimeOfDay
	if myTime == "19:00:00" then
		SpotLight.enabled = true
	else if myTime == "5:00:00" then
		SpotLight.enabled = false
	end
end

And here is the day/night cycle script if you think there's something wrong in it, note that I don't have troubles with this script:-

local dayLength = 24

local cycleTime = dayLength*60
local minutesInADay = 24*60

local lighting = game:GetService("Lighting")

local startTime = tick() - (lighting:getMinutesAfterMidnight() / minutesInADay)*cycleTime
local endTime = startTime + cycleTime

local timeRatio = minutesInADay / cycleTime

if dayLength == 0 then
	dayLength = 1
end

repeat
	local currentTime = tick()
	
	if currentTime > endTime then
		startTime = endTime
		endTime = startTime + cycleTime
	end
	
	lighting:setMinutesAfterMidnight((currentTime - startTime)*timeRatio)
	wait(1/15)
until false

NOTE: Please tell in your answer the following:-

1.Shall I put this script in normal script or in local script?

2.Shall I put this script in the SpotLight itself or in the part which has the SpotLight in.

3.Explain what did you change.

Thanks for helping.

Try removing the local prior to your variable in the spotlight script. A variable is a variable, the local could be messing you up. It SHOULD work after that.