What time does 1800 hours correspond to in standard time?

In military time, or the 24-hour clock system, 1800 hours represents the end of the workday and corresponds to 6 PM in standard time. The conversion process involves subtracting 1200 from any time greater than 1200 hours. For 1800, subtracting 1200 gives 600. The first two digits (6) indicate the hour, while the last two digits (00) represent the minutes. Thus, 1800 hours is equivalent to 6:00 PM, confirming that the correct choice is indeed 6 PM.