1 files changed, 48 insertions, 0 deletions
diff --git a/ruby_1_8_5/sample/goodfriday.rb b/ruby_1_8_5/sample/goodfriday.rb
new file mode 100644
index 0000000000..a95cfe819f
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+++ b/ruby_1_8_5/sample/goodfriday.rb
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+#! /usr/bin/env ruby
+
+# goodfriday.rb: Written by Tadayoshi Funaba 1998, 2000, 2002
+# $Id: goodfriday.rb,v 1.1 1998-03-08 18:44:44+09 tadf Exp $
+
+require 'date'
+
+def easter(y)
+  g = (y % 19) + 1
+  c = (y / 100) + 1
+  x = (3 * c / 4) - 12
+  z = ((8 * c + 5) / 25) - 5
+  d = (5 * y / 4) - x - 10
+  e = (11 * g + 20 + z - x) % 30
+  e += 1 if e == 25 and g > 11 or e == 24
+  n = 44 - e
+  n += 30 if n < 21
+  n = n + 7 - ((d + n) % 7)
+  if n <= 31 then [y, 3, n] else [y, 4, n - 31] end
+end
+
+es = Date.new(*easter(Time.now.year))
+[[-9*7, 'Septuagesima Sunday'],
+ [-8*7, 'Sexagesima Sunday'],
+ [-7*7, 'Quinquagesima Sunday (Shrove Sunday)'],
+ [-48,  'Shrove Monday'],
+ [-47,  'Shrove Tuesday'],
+ [-46,  'Ash Wednesday'],
+ [-6*7, 'Quadragesima Sunday'],
+ [-3*7, 'Mothering Sunday'],
+ [-2*7, 'Passion Sunday'],
+ [-7,   'Palm Sunday'],
+ [-3,   'Maunday Thursday'],
+ [-2,   'Good Friday'],
+ [-1,   'Easter Eve'],
+ [0,    'Easter Day'],
+ [1,    'Easter Monday'],
+ [7,    'Low Sunday'],
+ [5*7,  'Rogation Sunday'],
+ [39,   'Ascension Day (Holy Thursday)'],
+ [42,   'Sunday after Ascension Day'],
+ [7*7,  'Pentecost (Whitsunday)'],
+ [50,   'Whitmonday'],
+ [8*7,  'Trinity Sunday'],
+ [60,   'Corpus Christi (Thursday after Trinity)']].
+each do |xs|
+  puts((es + xs.shift).to_s + '  ' + xs.shift)
+end