The Collaborative International Dictionary of English v.0.48:

dateable \dateable\ adj.
   that can be given a date. Opposite of undatable. [Narrower
   terms: dated]

   Syn: datable.
        [WordNet 1.5]

              a concrete and dateable happening   --C. W.
                                                  Shumaker

The Collaborative International Dictionary of English v.0.48:

dated \dated\ adj.
   1. marked by features of the immediate and usually discounted
      past.

   Syn: outmoded; pass['e]. [WordNet 1.5 +PJC]

   2. bearing a date; as, dated and stamped documents.
      [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Date \Date\, v. t. [imp. & p. p. Dated; p. pr. & vb. n.
   Dating.] [Cf. F. dater. See 2d Date.]
   1. To note the time of writing or executing; to express in an
      instrument the time of its execution; as, to date a
      letter, a bond, a deed, or a charter.
      [1913 Webster]

   2. To note or fix the time of, as of an event; to give the
      date of; as, to date the building of the pyramids.
      [1913 Webster]

   Note: We may say dated at or from a place.
         [1913 Webster]

               The letter is dated at Philadephia. --G. T.
                                                  Curtis.
         [1913 Webster]

               You will be suprised, I don't question, to find
               among your correspondencies in foreign parts, a
               letter dated from Blois.           --Addison.
         [1913 Webster]

               In the countries of his jornal seems to have been
               written; parts of it are dated from them. --M.
                                                  Arnold.
         [1913 Webster]

WordNet (r) 3.0 (2006):

dated
    adj 1: marked by features of the immediate and usually
           discounted past