How to add time to game, and ways ?

How do I make a time, like to show how long the server has been running since and what are the ways to do it ?

Make a part and add a SurfaceGui to it. Then add an TextLabel to the SurfaceGui. Customize the TextLabel how you want. Now insert a Script into the TextLabel. Write the following into the script:

local label = script.Parent --The TextButton

while true do wait(.5)
	local t = game.Workspace.DistributedGameTime
	local h = t / 3600
	local m = t % 3600
	m = m / 60
	local s = m % 60
	label.Text = h .. ":" .. m ..":" .. s
end

If this doesn't work, tell me ASAP so I can try to fix it

Also, accept is this helped