ComputerCraft SetTime Receiver

rednet.open("right")
rednet.host("Weather","SetTime")
while 1 do
    local senderId, message, protocol = rednet.receive("Weather")
    if (message == "setDay") then
        redstone.setOutput("right", true)
        sleep(1)
        redstone.setOutput("right", false)
    elseif (message == "setNight") then
        redstone.setOutput("left", true)
        sleep(1)
        redstone.setOutput("left", false)
    end
end