Day-Night clock

mon = peripheral.wrap( "left" )
readout = "Awaiting time shift."
side = "back" --redstone output side

mon.write(readout)
print(readout)
time1 = 6.00
time2 = 18.00
event = "blank"
input = "blank"
function clear()
    term.clear()
    term.setCursorPos(1,1)
end

function rnd()  --reset and display
    mon.clear()
    mon.setCursorPos(1,1)
    sunrise = os.setAlarm(time1)
    sunset = os.setAlarm(time2)
    print(readout)
    mon.write(readout)
end

function dbug()
    print("event:" .. event)
    print("input:" .. input)
    print("readout:" .. readout)
end

rnd()

while true do
    event, input = os.pullEvent("alarm")
    if input == sunrise then
        redstone.setOutput(side, false)
        readout = "Good Morning."
        rnd()
        -- dbug()
        print("lights out.")
        sleep(1)
    elseif  input == sunset then
        redstone.setOutput(side, true)
        readout = "Good Night."
        rnd()
        -- dbug()
        print("lights on.")
        sleep(1)
    end
end

clear()