I get a rare response from mediasense api.

in date tag obtain this 1328282249810 (Wed, 03 Aug 44061 03:36:50 GMT)  this is the unix time but the real date is 1328282249 (Fri, 03 Feb 2012 15:17:29 GMT) however  media sense add the last three number 810.
 
This event also occurs on the length were each session.

my question is

why mediasense add that last three digits to real unix time?


add response from mediasense api

=> Success: Your request was successfully completed.
    => 2000
    => stdClass Object
        (
            => Array
                (
                    [0] => stdClass Object
                        (
                            => Array
                                (
                                )

                            => CLOSED_NORMAL
                            => db13543caa8341
                            => stdClass Object
                                (
                                    => rtsp://172.30.199.31/archive/db13543caa8341
                                )

                            => 1328282249810
                            => Array
                                (
                                    [0] => stdClass Object
                                        (
                                            => 1328282249810
                                            => 35494
                                            => http://172.30.199.31:8081/ExportRaw?recording=db13543caa8341-TRACK1
                                            => 1
                                            => AUDIO
                                            => Array
                                                (
                                                    [0] => stdClass Object
                                                        (
                                                            [participantStartDate] => 1328282249810
                                                            => 087308476
                                                            =>
                                                            => 27096124
                                                            [participantDuration] => 35494
                                                            => CUCM-Altus
                                                        )

                                                )

                                        )

                                    [1] => stdClass Object
                                        (
                                            => 1328282249810
                                            => 35494
                                            => http://172.30.199.31:8081/ExportRaw?recording=db13543caa8341-TRACK0
                                            => 0
                                            => AUDIO
                                            => Array
                                                (
                                                    [0] => stdClass Object
                                                        (
                                                            [participantStartDate] => 1328282249810
                                                            => 1071
                                                            =>
                                                            => 27096123
                                                            [participantDuration] => 35494
                                                            => SEP001E138C7E00
                                                        )

                                                )

                                        )

                                )

                            => 35494
                        )

thanks a lot...