It appears that you’ve provided a very short time duration for bus route 15C between Kallakurichi and Perumangalam operated by TNSTC-VPM. The times you’ve mentioned, “0:00:16” and “0:00:17,” are incredibly brief, and they don’t seem to represent realistic departure and arrival times for a bus journey.
Typically, bus schedules use a 24-hour clock format, so if you could provide the correct departure and arrival times, I’d be happy to help you with the information you need.