Telling time with a 24 hour clock

In the letter by Joshua Chamberlain dated July 21, 1863, "The battle for Little Round Top," he stated times using the military system of timekeeping. The military operates on a 24 hour clock. The time is shown by the hours that have already elapsed during the day. For instance, 1 o'clock in the morning would be 0100.

Below is a list showing how the times match up.

0100------------------1:00am

0200------------------2:00am

0300------------------3:00am

0400------------------4:00am

0500------------------5:00am

0600------------------6:00am

0700------------------7:00am

0800------------------8:00am

0900------------------9:00am

1000-----------------10:00am

1100-----------------11:00am

1200-----------------12:00pm

1300------------------1:00pm

1400------------------2:00pm

1500------------------3:00pm

1600------------------4:00pm

1700------------------5:00pm

1800------------------6:00pm

1900------------------7:00pm

2000------------------8:00pm

2100------------------9:00pm

2200-----------------10:00pm

2300-----------------11:00pm

2400 or 0000---------12:00am