diff --git a/lib/validates_timeliness/conversion.rb b/lib/validates_timeliness/conversion.rb
index 3e53bca..cf75c49 100644
--- a/lib/validates_timeliness/conversion.rb
+++ b/lib/validates_timeliness/conversion.rb
@@ -19,8 +19,23 @@ module ValidatesTimeliness
       else
         [0,0,0]
       end
-      dummy_date = ValidatesTimeliness.dummy_date_for_time_type
-      Time.local(*(dummy_date + time))
+      Time.local(*(ValidatesTimeliness.dummy_date_for_time_type + time))
+    end
+
+    def evaluate_option_value(value, record)
+      case value
+      when Time, Date
+        value
+      when String
+        value.to_time(:local)
+      when Symbol
+        evaluate_option_value(record.send(value), record)
+      when Proc
+        result = value.arity > 0 ? value.call(record) : value.call
+        evaluate_option_value(result, record)
+      else
+        value
+      end
     end
 
   end
diff --git a/spec/validates_timeliness/conversion_spec.rb b/spec/validates_timeliness/conversion_spec.rb
index 28becd3..4370146 100644
--- a/spec/validates_timeliness/conversion_spec.rb
+++ b/spec/validates_timeliness/conversion_spec.rb
@@ -99,4 +99,56 @@ describe ValidatesTimeliness::Conversion do
       end
     end
   end
+
+  describe "#evaluate_option_value" do
+    let(:person) { Person.new }
+
+    it 'should return Date object as is' do
+      value = Date.new(2010,1,1)
+      evaluate_option_value(value, person).should == value
+    end
+
+    it 'should return Time object as is' do
+      value = Time.mktime(2010,1,1)
+      evaluate_option_value(value, person).should == value
+    end
+
+    it 'should return DateTime object as is' do
+      value = DateTime.new(2010,1,1,0,0,0)
+      evaluate_option_value(value, person).should == value
+    end
+
+    it 'should return local Time value from string time value' do
+      value = '2010-01-01 12:00:00'
+      evaluate_option_value(value, person).should == Time.mktime(2010,1,1,12,0,0)
+    end
+
+    it 'should return Time value returned from proc with 0 arity' do
+      value = Time.mktime(2010,1,1)
+      evaluate_option_value(lambda { value }, person).should == value
+    end
+
+    it 'should return Time value returned by record attribute call in proc arity of 1' do
+      value = Time.mktime(2010,1,1)
+      person.birth_time = value
+      evaluate_option_value(lambda {|r| r.birth_time }, person).should == value
+    end
+
+    it 'should return Time value from proc which returns string time' do
+      value = '2010-01-01 12:00:00'
+      evaluate_option_value(lambda { value }, person).should == Time.mktime(2010,1,1,12,0,0)
+    end
+
+    it 'should return Time value for attribute method symbol which returns Time' do
+      value = Time.mktime(2010,1,1)
+      person.birth_time = value
+      evaluate_option_value(:birth_time, person).should == value
+    end
+
+    it 'should return Time value for attribute method symbol which returns string time value' do
+      value = '2010-01-01 12:00:00'
+      person.birth_time = value
+      evaluate_option_value(:birth_time, person).should == Time.mktime(2010,1,1,12,0,0)
+    end
+  end
 end