Smart Time setting

Intro = "{text:\"[\",color:green},{text:\"SERVER\",color:red},{text:\"] \",color:green}"
commands.tellraw("@a ["..Intro..",{text:\"The server's time controller script is \",color:yellow},{text:\"ONLINE!\",color:green()}]")
while true do
  print(os.time())
  if os.time() > 19 then
    commands.tellraw("@a ["..Intro..",{text:\"WARNING! \",color:red},{text:\"The time is being fast-forwarded for your convenience. Thank you and have a nice day,\"}]")
    while os.time() < 5 or os.time() > 19 do
      commands.time("add 100")
      sleep(0.01)
    end
  end
  sleep(1)
end