Set the timezone for the process

lib/jekyll.rb

@@ -73,6 +73,20 @@ module Jekyll
     config = config.read_config_files(config.config_files(override))
 
     # Merge DEFAULTS < _config.yml < override
-    config.deep_merge(override).stringify_keys
+    config = config.deep_merge(override).stringify_keys
+    set_timezone(config)
+
+    config
+  end
+
+  # Static: Set the TZ environment variable to use the timezone specified
+  #
+  # config - the Jekyll::Configuration generated by Jekyll.configuration
+  #
+  # Returns nothing
+  def self.set_timezone(config)
+    if config['timezone']
+      ENV['TZ'] = config['timezone']
+    end
   end
 end

lib/jekyll/configuration.rb

@@ -10,6 +10,8 @@ module Jekyll
       'layouts'       => '_layouts',
       'keep_files'    => ['.git','.svn'],
 
+      'timezone'      => nil             # use the local timezone
+
       'safe'          => false,
       'show_drafts'   => nil,
       'limit_posts'   => nil,