diff --git a/data/index.yaml b/data/index.yaml
index 61f5391..aa9d14f 100644
--- a/data/index.yaml
+++ b/data/index.yaml
@@ -16,6 +16,7 @@ defs:
   NL: ['nl.yaml']
   "NO": ['no.yaml']
   NYSE: ['nyse.yaml']
+  NZ: ['nz.yaml']
   PT: ['pt.yaml']
   US: ['us.yaml', 'north_america_informal.yaml']
   United_Nations: ['united_nations.yaml']
diff --git a/data/nz.yaml b/data/nz.yaml
new file mode 100644
index 0000000..2b461ef
--- /dev/null
+++ b/data/nz.yaml
@@ -0,0 +1,141 @@
+# New Zealand holiday definitions for the Ruby Holiday gem.
+# Updated: 2010-03-28.
+# Sources:
+# - http://en.wikipedia.org/wiki/Public_holidays_in_New_Zealand
+---
+months:
+  0:
+  - name: Good Friday
+    regions: [nz]
+    function: easter(year)-2
+  - name: Easter Saturday
+    regions: [nz]
+    function: easter(year)-1
+  - name: Easter Monday
+    regions: [nz]
+    function: easter(year)+1
+  1:
+  - name: New Year's Day
+    regions: [nz]
+    mday: 1
+    observed: to_monday_if_weekend
+  - name: Day after New Year's Day
+    regions: [nz]
+    mday: 2
+    observed: to_weekday_if_boxing_weekend
+  - name: Southland Anniversary Day
+    regions: [nz_sl]
+    mday: 17
+  - name: Wellington Anniversary Day
+    regions: [nz_we]
+    mday: 22
+    observed: closest_monday
+  - name: Auckland Anniversary Day
+    regions: [nz_ak]
+    mday: 29
+    observed: closest_monday
+  - name: Northland Anniversary Day
+    regions: [nz_nl]
+    mday: 29
+    observed: closest_monday
+  2:
+  - name: Nelson Anniversary Day
+    regions: [nz_ak]
+    mday: 1
+    observed: closest_monday
+  - name: Waitangi Day
+    regions: [au]
+    mday: 6
+  3:
+  - name: Otago Anniversary Day
+    regions: [nz_ot]
+    mday: 23
+    observed: closest_monday
+  - name: Taranaki Anniversary Day
+    regions: [nz_ak]
+    week: 2
+    wday: 1
+  4:
+  - name: ANZAC Day
+    regions: [au]
+    mday: 25
+  6:
+  - name: Queen's Birthday
+    regions: [nz]
+    week: 1
+    wday: 1
+  9:
+  - name: Dominion Day
+    regions: [nz_sc]
+    week: 4
+    wday: 1
+  10:
+  - name: Hawke's bay Anniversary Day
+    regions: [nz_hb]
+    week: 1
+    wday: 1
+    observed: previous_friday
+  - name: Labour Day
+    regions: [nz]
+    week: 4
+    wday: 1
+  - name: Marlborough Anniversary Day
+    regions: [nz_mb]
+    week: 4
+    wday: 1
+    observed: next_week
+  11:
+  - name: Canterbury Anniversary Day
+    regions: [nz_ca]
+    week: 2
+    wday: 5
+  - name: Chatham Island Anniversary Day
+    regions: [nz_ch]
+    mday: 30
+    observed: closest_monday
+  12:
+  - name: Westland Anniversary Day
+    regions: [nz_wl]
+    mday: 1
+    observed: closest_monday
+  - name: Christmas Day
+    regions: [nz]
+    mday: 25
+    observed: to_monday_if_weekend
+  - name: Boxing Day
+    regions: [nz]
+    mday: 26
+    observed: to_weekday_if_boxing_weekend
+tests: |
+    {Date.civil(2007,1,1) => 'New Year\'s Day',
+     Date.civil(2007,1,2) => 'Day after New Year\'s Day',
+     Date.civil(2007,2,6) => 'Waitangi',
+     Date.civil(2007,4,6) => 'Good Friday',
+     Date.civil(2007,4,9) => 'Easter Monday',
+     Date.civil(2007,4,25) => 'ANZAC Day',
+     Date.civil(2007,12,25) => 'Christmas Day',
+     Date.civil(2007,12,26) => 'Boxing Day'}.each do |date, name|
+      assert_equal name, Holidays.on(date, :nz, :informal)[0][:name]
+    end
+methods:
+  closest_monday: |
+    def self.closest_monday(date)
+      if [1, 2, 3, 4].include?(date.wday)
+        date -= (date.wday - 1)
+      elsif 0 == date.wday
+        date += 1
+      else
+        date += 8 - date.wday
+      end
+      date
+    end
+
+  previous_friday: |
+    def self.previous_friday(date)
+      date - 3
+    end
+
+  next_week: |
+    def self.next_week(date)
+      date + 7
+    end
\ No newline at end of file
diff --git a/lib/holidays/MANIFEST b/lib/holidays/MANIFEST
index 277e7a9..c88f543 100644
--- a/lib/holidays/MANIFEST
+++ b/lib/holidays/MANIFEST
@@ -17,6 +17,7 @@ The following definition files are included in this installation:
 * holidays/nl
 * holidays/north_america
 * holidays/nyse
+* holidays/nz
 * holidays/pt
 * holidays/scandinavia
 * holidays/se
diff --git a/lib/holidays/nz.rb b/lib/holidays/nz.rb
new file mode 100644
index 0000000..6a1d5d9
--- /dev/null
+++ b/lib/holidays/nz.rb
@@ -0,0 +1,69 @@
+# coding: utf-8
+module Holidays
+  # This file is generated by the Ruby Holiday gem.
+  #
+  # Definitions loaded: data/nz.yaml
+  #
+  # To use the definitions in this file, load them right after you load the 
+  # Holiday gem:
+  #
+  #   require 'holidays'
+  #   require 'holidays/nz'
+  #
+  # More definitions are available at http://code.dunae.ca/holidays.
+  module NZ # :nodoc:
+    DEFINED_REGIONS = [:nz_ca, :nz_ch, :nz, :nz_wl, :nz_sl, :nz_we, :nz_ak, :nz_nl, :au, :nz_ot, :nz_sc, :nz_hb, :nz_mb]
+
+    HOLIDAYS_BY_MONTH = {
+      0 => [{:function => lambda { |year| Holidays.easter(year)-2 }, :function_id => "easter(year)-2", :name => "Good Friday", :regions => [:nz]},
+            {:function => lambda { |year| Holidays.easter(year)-1 }, :function_id => "easter(year)-1", :name => "Easter Saturday", :regions => [:nz]},
+            {:function => lambda { |year| Holidays.easter(year)+1 }, :function_id => "easter(year)+1", :name => "Easter Monday", :regions => [:nz]}],
+      11 => [{:wday => 5, :week => 2, :name => "Canterbury Anniversary Day", :regions => [:nz_ca]},
+            {:mday => 30, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Chatham Island Anniversary Day", :regions => [:nz_ch]}],
+      6 => [{:wday => 1, :week => 1, :name => "Queen's Birthday", :regions => [:nz]}],
+      1 => [{:mday => 1, :observed => lambda { |date| Holidays.to_monday_if_weekend(date) }, :observed_id => "to_monday_if_weekend", :name => "New Year's Day", :regions => [:nz]},
+            {:mday => 2, :observed => lambda { |date| Holidays.to_weekday_if_boxing_weekend(date) }, :observed_id => "to_weekday_if_boxing_weekend", :name => "Day after New Year's Day", :regions => [:nz]},
+            {:mday => 17, :name => "Southland Anniversary Day", :regions => [:nz_sl]},
+            {:mday => 22, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Wellington Anniversary Day", :regions => [:nz_we]},
+            {:mday => 29, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Auckland Anniversary Day", :regions => [:nz_ak]},
+            {:mday => 29, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Northland Anniversary Day", :regions => [:nz_nl]}],
+      12 => [{:mday => 1, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Westland Anniversary Day", :regions => [:nz_wl]},
+            {:mday => 25, :observed => lambda { |date| Holidays.to_monday_if_weekend(date) }, :observed_id => "to_monday_if_weekend", :name => "Christmas Day", :regions => [:nz]},
+            {:mday => 26, :observed => lambda { |date| Holidays.to_weekday_if_boxing_weekend(date) }, :observed_id => "to_weekday_if_boxing_weekend", :name => "Boxing Day", :regions => [:nz]}],
+      2 => [{:mday => 1, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Nelson Anniversary Day", :regions => [:nz_ak]},
+            {:mday => 6, :name => "Waitangi Day", :regions => [:au]}],
+      3 => [{:mday => 23, :observed => lambda { |date| Holidays.closest_monday(date) }, :observed_id => "closest_monday", :name => "Otago Anniversary Day", :regions => [:nz_ot]},
+            {:wday => 1, :week => 2, :name => "Taranaki Anniversary Day", :regions => [:nz_ak]}],
+      9 => [{:wday => 1, :week => 4, :name => "Dominion Day", :regions => [:nz_sc]}],
+      4 => [{:mday => 25, :name => "ANZAC Day", :regions => [:au]}],
+      10 => [{:wday => 1, :week => 1, :observed => lambda { |date| Holidays.previous_friday(date) }, :observed_id => "previous_friday", :name => "Hawke's bay Anniversary Day", :regions => [:nz_hb]},
+            {:wday => 1, :week => 4, :name => "Labour Day", :regions => [:nz]},
+            {:wday => 1, :week => 4, :observed => lambda { |date| Holidays.next_week(date) }, :observed_id => "next_week", :name => "Marlborough Anniversary Day", :regions => [:nz_mb]}]
+    }
+  end
+
+def self.closest_monday(date)
+  if [1, 2, 3, 4].include?(date.wday)
+    date -= (date.wday - 1)
+  elsif 0 == date.wday
+    date += 1
+  else
+    date += 8 - date.wday
+  end
+  date
+end
+
+
+def self.next_week(date)
+  date + 7
+end
+
+def self.previous_friday(date)
+  date - 3
+end
+
+
+
+end
+
+Holidays.merge_defs(Holidays::NZ::DEFINED_REGIONS, Holidays::NZ::HOLIDAYS_BY_MONTH)
diff --git a/test/defs/test_defs_nz.rb b/test/defs/test_defs_nz.rb
new file mode 100644
index 0000000..b6b7287
--- /dev/null
+++ b/test/defs/test_defs_nz.rb
@@ -0,0 +1,22 @@
+require File.dirname(__FILE__) + '/../test_helper'
+require 'holidays/nz'
+
+# This file is generated by the Ruby Holiday gem.
+#
+# Definitions loaded: data/nz.yaml
+class NzDefinitionTests < Test::Unit::TestCase  # :nodoc:
+
+  def test_nz
+{Date.civil(2007,1,1) => 'New Year\'s Day',
+ Date.civil(2007,1,2) => 'Day after New Year\'s Day',
+ Date.civil(2007,2,6) => 'Waitangi',
+ Date.civil(2007,4,6) => 'Good Friday',
+ Date.civil(2007,4,9) => 'Easter Monday',
+ Date.civil(2007,4,25) => 'ANZAC Day',
+ Date.civil(2007,12,25) => 'Christmas Day',
+ Date.civil(2007,12,26) => 'Boxing Day'}.each do |date, name|
+  assert_equal name, Holidays.on(date, :nz, :informal)[0][:name]
+end
+
+  end
+end