11:10:11
$endpart: 11:10:13 and Runduration: 2 seconds
=======================

starttime, $^T without POSIX: 1233763810
Start time, , $^T with  POSIX: 11:10:10
        2nd POSIX, $^T: 11:10:10
        3rd POSIX, current time: 11:10:13
local_time(): Wed Feb  4 11:10:13 2009
POSIX localtime: Wed Feb  11:10:13 2009
...and after sleeping another second, POSIX localtime: Wed Feb  11:10:14 2009