1800 hours = 6:00 PM
1800 hours is 6:00 PM in standard 12-hour time. On a 24-hour clock it is 18:00. Spoken military time is “eighteen hundred hours”.
How to convert 1800
1800 is after noon. Subtract 12 from the hour (18 − 12 = 6) and add PM. The result is 6:00 PM. Hours 1300–2359 are all PM.