my $date1 = "2014/01/25 23:11:14"; 
my $date2 = "2014/01/26 00:30:37";
use Date::Manip::Date 6.23;
my $do1 = Date::Manip::Date->new($date1);
my $do2 = $do1->new($date2);
my $delta = $do1->calc($do2);
# If you want a human-readable string:
print $delta->printf("The difference is %mym minutes, %sss seconds.\n");
# If you want the number of minutes and seconds as separate numbers:
my($delta_min, $delta_sec) = $delta->printf("%mym", "%sss");