code: function amf3decDate(buf) {  // The UI29 should be 1
      var uTz = amf3decUI29(buf);
      var ts = buf.readDoubleBE(uTz.len);
      return { len: uTz.len + 8, value: ts }
  }
docs: AMF3 Decode Date
  @param buf
  @returns {{len: *, value: (*|Number)}}