Answer:

12-hour clock - 24-hour clock.

5:30 am - 0530

4:20 am - 0420

12:40 pm - 0040

1:45 pm - 1345

12:15 pm - 0015

12:45 pm - 0045

11:59 pm - 2359

11:05 pm -2105

2:35 am - 0235

10:45 am - 1045

Step-by-step explanation:

hope it's helps. pabrainliest ty, wc.