Remember that 24 hour clock time uses 4 numbers separating the hours from the minutes with a : sign.
7.35 a.m. is 07:35
7.35 p.m. is 19:35
Example
What 24 hour time is 46 minutes after 7.35 p.m.?
Answer
We start at 7.00 p.m. and then add the two minutes numbers.
35 + 46 = 81 minutes.
81 minutes is 1 hour and 21 minutes.
1 hour and 21 minutes after 7.00 p.m. is 8.21 p.m.
8.21 p.m. is 20:21 in 24 hour clock time.