A string of the form hh:mm:ss that is the sum of the input.
| ListValue | A list where each string is of the form hh:mm:ss. |
Note that minutes and seconds will end up with a value no greater than 59. For example, SumHhmmss {00:30:30 00:30:30} will return 01:01:00, not 00:60:60.
For information regarding exceptions / errors, see
here.
% SumHhmmss {01:00:00 00:01:00 00:00:01}
01:01:01