in PHP I probably would have done something like this:
<?php
$timestamp = strtotime("1/1/1900 3:19:07 PM"); // convert string date to unix timestamp
$time = date("h:i:s A",$timestamp); // return only the hour,minutes, seconds in 12 hour format
echo $time;
?>
or if ASP are unable to work with unixtimes like this
<?php
$date = "1/1/1900 3:19:07 PM"; // putting the date into a variable
$time = stristr($date," "); // splitting at the first occurence of a space and returning the rest, including the whitespace where it splits.
$time = trim($time); // removing whitespaces at beginning and end.
echo $time; // echo $time.
?>