sunrise and sunset values

[admin]

Code:

latitude = 11.11
longitude = 22.22
sunrise, sunset = rscalc(latitude, longitude)

date = os.date('*t')
now = date.hour * 60 + date.min

-- from 0:00 to sunrise
if now < sunrise then
  alert('before sunrise')
-- from sunset to 23:59
elseif now > sunset then
  alert('after sunset')
else
  alert('day')
end