0900 hours = 9:00 AM
0900 hours is 9:00 AM in standard 12-hour time. On a 24-hour clock it is 09:00. Spoken military time is “zero nine hundred hours”.
How to convert 0900
0900 is a morning time (hour 9 on the 24-hour clock). Drop any leading zero and add AM: 9:00 AM. Hours 0000–1159 are all AM.