1500 hours = 3:00 PM
1500 hours is 3:00 PM in standard 12-hour time. On a 24-hour clock it is 15:00. Spoken military time is “fifteen hundred hours”.
How to convert 1500
1500 is after noon. Subtract 12 from the hour (15 − 12 = 3) and add PM. The result is 3:00 PM. Hours 1300–2359 are all PM.