>>> from curses import difer_hms

>> difer_hms(3, 23, 17, 3, 34, 1)
(0, 10, 44)
>>> difer_hms(3, 23, 17, 3, 23, 16)
(0, 0, 1)
>>> difer_hms(3, 23, 17, 3, 24, 17)
(0, 1, 0)
>>> difer_hms(4, 0, 0, 3, 56, 31)
(0, 3, 29)