How can I sort a column of military times from earliest to latest?

I have a column with military times that I would like to sort from the earliest time to the latest time and also sort the column next to it with it.


The earliest time on the list is 1:15 with M next to it in the next column. I'd like to keep the letters next to each time. And also, how can I get it to ignore blank cells in the column and just any cell that doesn't contain military time format?

I have attached an example.


Thanks.