CC day/night sensor (puls)

m=peripheral.wrap("front")
t="Day"
side="back"
while true do
if os.time()<=18.5 and os.time()>=6.0 and t=="Night" then
t="Day"
rs.setOutput(side,true)
sleep(1)
rs.setOutput(side,false)
end
if os.time()<=6.0 and os.time()>=18.5 and t=="Day" then
t="Night"
rs.setOutput(side,true)
sleep(1)
rs.setOutput(side,false)
end
sleep(1)
end