Make a GUI pop up at a certain time using the time from lighting?

Hello! I am trying to learn how to make a GUI pop up at a certain time using the time from lighting. I have a time-changing script and I would like a GUI to show up, for an example, when it hits 6:00:00 and disappears at 7:00:00.

This is my very first script I am trying to make, so it probably has a lot of errors, I apologize. Things like I don't know if ServerStorage is the correct place to store something like this, where I would put this script (I put it as an extension of the textbox), if I have the labeling correct, and if "Enabled" is the right term because I see the checkbox is actually called "Visible".

TextBox = game.ServerStorage.ScreenGui.TextBox
minutesAfterMidnight = 0
 
while true do
	minutesAfterMidnight = minutesAfterMidnight + 10
	game.Lighting:SetMinutesAfterMidnight(minutesAfterMidnight)
	wait(0.1)
 
	if game.Lighting:GetMinutesAfterMidnight() == 7 * 60 then		
		TextBox.Enabled = false
	end
	if game.Lighting:GetMinutesAfterMidnight() == 6 * 60 then		
		TextBox.Enabled = true
	end
end

Thanks :)