diff --git a/lib/fog/aws/ses.rb b/lib/fog/aws/ses.rb
index a63e97947c..d7dd305e98 100644
--- a/lib/fog/aws/ses.rb
+++ b/lib/fog/aws/ses.rb
@@ -70,7 +70,7 @@ def request(params)
 
           headers = {
             'Content-Type'  => 'application/x-www-form-urlencoded',
-            'Date'          => Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000")
+            'Date'          => Fog::Time.now.to_date_header
           }
 
           #AWS3-HTTPS AWSAccessKeyId=<Your AWS Access Key ID>, Algorithm=HmacSHA256, Signature=<Signature>
diff --git a/lib/fog/cdn/aws.rb b/lib/fog/cdn/aws.rb
index 56e1c240b4..679e992a66 100644
--- a/lib/fog/cdn/aws.rb
+++ b/lib/fog/cdn/aws.rb
@@ -98,7 +98,7 @@ def reload
 
         def request(params, &block)
           params[:headers] ||= {}
-          params[:headers]['Date'] = Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000")
+          params[:headers]['Date'] = Fog::Time.now.to_date_header
           params[:headers]['Authorization'] = "AWS #{@aws_access_key_id}:#{signature(params)}"
           params[:path] = "/#{@version}/#{params[:path]}" 
           @connection.request(params, &block)
diff --git a/lib/fog/core/time.rb b/lib/fog/core/time.rb
index 23c81a0978..d73452d9b5 100644
--- a/lib/fog/core/time.rb
+++ b/lib/fog/core/time.rb
@@ -1,21 +1,27 @@
 module Fog
   class Time < ::Time
-    class << self
 
-      def now
-        ::Time.now - offset
-      end
+    DAYS = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']
+    MONTHS = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
 
-      def now=(new_now)
-        old_now = ::Time.now
-        @offset = old_now - new_now
-        new_now
-      end
+    def self.now
+      at((::Time.now - offset).to_i)
+    end
 
-      def offset
-        @offset ||= 0
-      end
+    def self.now=(new_now)
+      old_now = ::Time.now
+      @offset = old_now - new_now
+      new_now
+    end
 
+    def self.offset
+      @offset ||= 0
     end
+
+    def to_date_header
+      now = self.class.now.utc
+      now.strftime("#{DAYS[now.wday]}, %d #{MONTHS[now.month - 1]} %Y %H:%M:%S +0000")
+    end
+
   end
-end
\ No newline at end of file
+end
diff --git a/lib/fog/dns/aws.rb b/lib/fog/dns/aws.rb
index ece696d658..025be7f69f 100644
--- a/lib/fog/dns/aws.rb
+++ b/lib/fog/dns/aws.rb
@@ -103,7 +103,7 @@ def reload
 
         def request(params, &block)
           params[:headers] ||= {}
-          params[:headers]['Date'] = Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000")
+          params[:headers]['Date'] = Fog::Time.now.to_date_header
           params[:headers]['X-Amzn-Authorization'] = "AWS3-HTTPS AWSAccessKeyId=#{@aws_access_key_id},Algorithm=HmacSHA1,Signature=#{signature(params)}"
           params[:path] = "/#{@version}/#{params[:path]}" 
           @connection.request(params, &block)
diff --git a/lib/fog/storage/aws.rb b/lib/fog/storage/aws.rb
index e4995bd0fa..8e39414e29 100644
--- a/lib/fog/storage/aws.rb
+++ b/lib/fog/storage/aws.rb
@@ -289,7 +289,7 @@ def reload
         private
 
         def request(params, &block)
-          params[:headers]['Date'] = Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000")
+          params[:headers]['Date'] = Fog::Time.now.to_date_header
           params[:headers]['Authorization'] = "AWS #{@aws_access_key_id}:#{signature(params)}"
           params[:expects] = [307, *params[:expects]].flatten
           # FIXME: ToHashParser should make this not needed
diff --git a/lib/fog/storage/google.rb b/lib/fog/storage/google.rb
index 222b145dff..b3689faf8d 100644
--- a/lib/fog/storage/google.rb
+++ b/lib/fog/storage/google.rb
@@ -212,7 +212,7 @@ def reload
         private
 
         def request(params, &block)
-          params[:headers]['Date'] = Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000")
+          params[:headers]['Date'] = Fog::Time.now.to_date_header
           params[:headers]['Authorization'] = "GOOG1 #{@google_storage_access_key_id}:#{signature(params)}"
 
           response = @connection.request(params, &block)
diff --git a/lib/fog/storage/requests/aws/get_object.rb b/lib/fog/storage/requests/aws/get_object.rb
index 440d8d3a10..64d4333210 100644
--- a/lib/fog/storage/requests/aws/get_object.rb
+++ b/lib/fog/storage/requests/aws/get_object.rb
@@ -39,8 +39,8 @@ def get_object(bucket_name, object_name, options = {}, &block)
             query = {'versionId' => version_id}
           end
           headers = {}
-          headers['If-Modified-Since'] = options['If-Modified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
-          headers['If-Unmodified-Since'] = options['If-Unmodified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
+          headers['If-Modified-Since'] = Fog::Time.at(options['If-Modified-Since'].to_i).to_date_header if options['If-Modified-Since']
+          headers['If-Unmodified-Since'] = Fog::Time.at(options['If-Unmodified-Since'].to_i).to_date_header if options['If-Modified-Since']
           headers.merge!(options)
           request({
             :expects  => 200,
diff --git a/lib/fog/storage/requests/aws/head_object.rb b/lib/fog/storage/requests/aws/head_object.rb
index 5451a80203..ff044e8053 100644
--- a/lib/fog/storage/requests/aws/head_object.rb
+++ b/lib/fog/storage/requests/aws/head_object.rb
@@ -39,8 +39,8 @@ def head_object(bucket_name, object_name, options={})
             query = {'versionId' => version_id}
           end
           headers = {}
-          headers['If-Modified-Since'] = options['If-Modified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
-          headers['If-Unmodified-Since'] = options['If-Unmodified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
+          headers['If-Modified-Since'] = Fog::Time.at(options['If-Modified-Since'].to_i).to_date_header if options['If-Modified-Since']
+          headers['If-Unmodified-Since'] = Fog::Time.at(options['If-Unmodified-Since'].to_i).to_date_header if options['If-Modified-Since']
           headers.merge!(options)
           request({
             :expects  => 200,
diff --git a/lib/fog/storage/requests/aws/put_object.rb b/lib/fog/storage/requests/aws/put_object.rb
index c2fc8d8840..007dd827bd 100644
--- a/lib/fog/storage/requests/aws/put_object.rb
+++ b/lib/fog/storage/requests/aws/put_object.rb
@@ -67,7 +67,7 @@ def put_object(bucket_name, object_name, data, options = {})
               'Content-Type'  => data[:headers]['Content-Type'],
               'ETag'          => Fog::AWS::Mock.etag,
               'Key'           => object_name,
-              'LastModified'  => Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000"),
+              'LastModified'  => Fog::Time.now.to_date_header,
               'Size'          => data[:headers]['Content-Length'],
               'StorageClass'  => 'STANDARD'
             }
diff --git a/lib/fog/storage/requests/google/get_object.rb b/lib/fog/storage/requests/google/get_object.rb
index 6fd879bbaa..09ce590313 100644
--- a/lib/fog/storage/requests/google/get_object.rb
+++ b/lib/fog/storage/requests/google/get_object.rb
@@ -36,8 +36,8 @@ def get_object(bucket_name, object_name, options = {}, &block)
             query = {'versionId' => version_id}
           end
           headers = {}
-          headers['If-Modified-Since'] = options['If-Modified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
-          headers['If-Unmodified-Since'] = options['If-Unmodified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
+          headers['If-Modified-Since'] = Fog::Time.at(options['If-Modified-Since'].to_i).to_date_header if options['If-Modified-Since']
+          headers['If-Unmodified-Since'] = Fog::Time.at(options['If-Unmodified-Since'].to_i).to_date_header if options['If-Modified-Since']
           headers.merge!(options)
           request({
             :expects  => 200,
diff --git a/lib/fog/storage/requests/google/head_object.rb b/lib/fog/storage/requests/google/head_object.rb
index 30515f18d8..26edd516b7 100644
--- a/lib/fog/storage/requests/google/head_object.rb
+++ b/lib/fog/storage/requests/google/head_object.rb
@@ -35,8 +35,8 @@ def head_object(bucket_name, object_name, options={})
             query = {'versionId' => version_id}
           end
           headers = {}
-          headers['If-Modified-Since'] = options['If-Modified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
-          headers['If-Unmodified-Since'] = options['If-Unmodified-Since'].utc.strftime("%a, %d %b %Y %H:%M:%S +0000") if options['If-Modified-Since']
+          headers['If-Modified-Since'] = Fog::Time.at(options['If-Modified-Since'].to_i).to_date_header if options['If-Modified-Since']
+          headers['If-Unmodified-Since'] = Fog::Time.at(options['If-Unmodified-Since'].to_i).to_date_header if options['If-Modified-Since']
           headers.merge!(options)
           request({
             :expects  => 200,
diff --git a/lib/fog/storage/requests/google/put_object.rb b/lib/fog/storage/requests/google/put_object.rb
index 4296208f63..3f7882073b 100644
--- a/lib/fog/storage/requests/google/put_object.rb
+++ b/lib/fog/storage/requests/google/put_object.rb
@@ -62,7 +62,7 @@ def put_object(bucket_name, object_name, data, options = {})
               'Content-Type'  => data[:headers]['Content-Type'],
               'ETag'          => Fog::Google::Mock.etag,
               'Key'           => object_name,
-              'LastModified'  => Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000"),
+              'LastModified'  => Fog::Time.now.to_date_header,
               'Size'          => data[:headers]['Content-Length'],
               'StorageClass'  => 'STANDARD'
             }