diff --git a/lib/redistat/date.rb b/lib/redistat/date.rb
index 8dc78d2..e4f7a9b 100644
--- a/lib/redistat/date.rb
+++ b/lib/redistat/date.rb
@@ -8,10 +8,12 @@ module Redistat
     attr_accessor :min
     attr_accessor :sec
     attr_accessor :usec
+    attr_accessor :depth
     
     DEPTHS = [:year, :month, :day, :hour, :min, :sec, :usec]
     
-    def initialize(input)
+    def initialize(input, depth = nil)
+      @depth = depth
       if input.is_a?(::Time)
         from_time(input)
       elsif input.is_a?(::Date)
@@ -39,7 +41,7 @@ module Redistat
     alias :to_integer :to_i
     
     def to_s(depth = nil)
-      depth ||= :sec
+      depth ||= @depth ||= :sec
       output = ""
       DEPTHS.each_with_index do |current, i|
         break if self.send(current).nil?
@@ -82,8 +84,8 @@ module Redistat
   end
   
   module DateHelper
-    def to_redistat
-      Redistat::Date.new(self)
+    def to_redistat(depth = nil)
+      Redistat::Date.new(self, depth)
     end
     alias :to_rs :to_redistat
   end
diff --git a/spec/date_spec.rb b/spec/date_spec.rb
index 4fc5d07..9c5955f 100644
--- a/spec/date_spec.rb
+++ b/spec/date_spec.rb
@@ -70,4 +70,18 @@ describe Redistat::Date do
     Date.today.to_rs.to_date.should == Date.today
   end
   
+  it "should have a depth property" do
+    now = Time.now
+    
+    date = Redistat::Date.new(now)
+    date.depth.should be_nil
+    date.to_s.should == now.to_rs(:sec).to_s
+    date.to_s.should == now.to_rs.to_s(:sec)
+    
+    date = Redistat::Date.new(now, :hour)
+    date.depth.should == :hour
+    date.to_s.should == now.to_rs(:hour).to_s
+    date.to_s.should == now.to_rs.to_s(:hour)
+  end
+  
 end
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