4. a.m. or p.m.: a.m. is from midnight to noon; p.m. is from noon to midnight. Write the time using the 24-hour clock: 1) 8.24 a.m. 2) 7.35 p.m. 3) 10.54 a.m. 4) 1.25 p.m. 5) 6.57 p.m. 6) midnight 7) 4.30 p.m. 8) noon