initial import

Rakefile

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+
+begin
+  require 'jeweler'
+  Jeweler::Tasks.new do |gemspec|
+    gemspec.name = "greek_easter"
+    gemspec.summary = "Never wonder again when easter is in Greece."
+    gemspec.description = "Never wonder again when easter is in Greece."
+    gemspec.email = "contact@jimeh.me"
+    gemspec.homepage = "http://github.com/jimeh/greek_easter"
+    gemspec.executables = ["greek_easter"]
+    gemspec.authors = ["Jim Myhrberg"]
+  end
+  Jeweler::GemcutterTasks.new
+rescue LoadError
+  puts "Jeweler not available. Install it with: sudo gem install technicalpickles-jeweler -s http://gems.github.com"
+end

bin/greek_easter

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+#! /usr/bin/env ruby
+require "rubygems"
+require "../lib/greek_easter"
+
+puts GreekEaster.at(ARGV[0])

lib/greek_easter.rb

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+class GreekEaster
+  
+  def self.at(year = nil)
+    date = self.easter(year)
+		return "In the year #{date.year}, the Greek Easter is on #{date.strftime("%d %B")}.";
+  end
+  
+  def self.easter(year = nil)
+    year = Time.now.year if year.nil?
+    year = year.to_i if year.is_a?(String)
+    a = year % 19
+    b = year % 4
+    c = year % 7
+    d = (19 * a + 16) % 30
+    e = (2 * b + 4 * c + 6 * d) % 7;
+  	easter = 3 + d + e;
+  	if easter <= 30
+  	  Time.local(year, 4, easter)
+  	else
+  	  Time.local(year, 5, (easter - 30))
+  	end
+  end
+  
+end