Date time conversion 24

I have date in three column: HOUR;MINUTE;AM/PM

I have try modestly to convert this to military time (1:00 to 24:59) but the datenum/string do not work.

Is there a method to this?

[Jan]

What does "date in three column" exactly mean? Is this a string, a file, a cell string or a numerical array?

Answer 1

[Azzi Abdelmalek]

d='01:30 PM'
new_d=datestr(datenum(d,'HH:MM AM'),'HH:MM')