GEMS18 — Additional data type of time_duration

It would be beneficial if an additional data type were available within GEMS of a time duration (time_duration). This allows for specification of a time offset. The suggested format would be:

[-]HH:MM:SS[.fffffffff]

Existing ground equipment solutions currently have time offsets and having this support would enable smoother and more accurate support and integration with GEMS-enabled products. Existing types do not adequately support providing an offset time duration format.