From: Joe Petrini <joepetrini@...>
Date: 2007-09-20T01:00:00+09:00
Subject: Re: How to compute Sunrise / Sunset ?

Ken Bloom wrote:
> On Wed, 19 Sep 2007 22:23:47 +0900, Joe Joe wrote:
> 
>> I need to compute sunrise/set times in ruby for a given long lat.  Does
>> anyone know any way to do this?  Are there any modules or helper classes
>> out there??
>> 
>> thanks!
> 
> I have previously posted code for this at
> http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/264573

I just came across that and had a little trouble getting it working but 
realized I was passing a datetime instead of a Date.

For anyone else interested put the code above in a file sunrise.rb:
  require 'Sunrise'
  include Sunrise
  #Create the location
  loc = Sunrise::Location.new(39.2,-75.1)
  Create the date
  d = Date.new(2007,9,19)
  sunrisetime = sunrise(d,p)


Thanks for the code, it's a lifesaver!!

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