Clock

--Clock
--By SparkyBearBomb

function monitorSearch()
   local names = peripheral.getNames()
   local i, name
   for i, name in pairs(names) do
      if peripheral.getType(name) == "monitor" then
        test = name
         return peripheral.wrap(name)
      else
         --return null
      end
   end
end

function roundNumber(num, n)
  local mult = 10^(n or 0)
  return math.floor(num * mult + 0.5) / mult
end

function heading(text)
   w, h = mon.getSize()
   mon.setCursorPos((w-string.len(text))/2+1, 1)
   mon.write(text)
end
mon = monitorSearch()

while true do
    time = os.time()
    if (time>06.00) and (time<18.00) then
        mon.setBackgroundColor(colors.white)
        mon.setTextColor(colors.green)
    else
        mon.setBackgroundColor(colors.black)
        mon.setTextColor(colors.red)
    end
    mon.setTextScale(5)
    mon.setCursorPos(3,1)
    mon.clear()
    mon.write("00:00")
    mon.setCursorPos(3,1)
    if (time<10.00) then
        mon.write("0")
    end
    time = roundNumber(time, 2)
    mon.write(time)
    sleep(0.5)
end