Is it sunrise or sunset with an offset?

[rocfusion]

Hi,

If you need to know if the current time is equal to an minute offset ( + or - ) of Sunset or Sunrise  place these scripts in the Common script.   For example, if its 40 minutes before sunrise,  you would create a resident script to run every minute.  

Code:

if( isSunrise(-40, 51.5072, 0.1275) == true) then
  doSomething()
end

example 2,  if its 30 minutes after then you would use

Code:

if( isSunset(30, 51.5072, 0.1275) == true) then
  doSomething()
end

And when you need to know if its Sunset or Sunrise then set the offset parameter to 0.

Code:

function isSunset(offset, latitude, longitude)
  local sunrise, sunset = rscalc(latitude, longitude)
  local now = os.date("*t")
  local yr =now.year
  local mth = now.month
  local dy = now.day
  local hr = math.floor(sunset / 60)
  local minute = sunset % 60
  local tm = os.time{year=yr, month=mth, day=dy, hour=hr, min=minute, sec=0}
  local offsettm
  if(offset >=1) then
    offsettm= tm+(offset*60)
  else
    offsettm= tm-((offset*-1)*60)
  end
  local now = os.time()
  if(offsettm>=(now-30) and offsettm<=(now+30))then
    return true
  else
    return false
  end
end

function isSunrise(offset, latitude, longitude)
  local sunrise, sunset = rscalc(latitude, longitude)
  local now = os.date("*t")
  local yr =now.year
  local mth = now.month
  local dy = now.day
  local hr = math.floor(sunrise / 60)
  local minute = sunrise % 60
  local tm = os.time{year=yr, month=mth, day=dy, hour=hr, min=minute, sec=0}
  local offsettm
  if(offset >=1) then
    offsettm= tm+(offset*60)
  else
    offsettm= tm-((offset*-1)*60)
  end
  local now = os.time()
  if(offsettm>=(now-30) and offsettm<=(now+30))then
    return true
  else
    return false
  end
end

Hope this may help.

Thanks,


Roger