The best direction to place a clock in a room is typically on the wall opposite the door. This positioning ensures that the clock is easily visible from any point in the room, making it a convenient reference for time. Additionally, placing the clock opposite the door avoids the potential for glare or shadows that could obscure the time from certain angles.

This placement is supported by research on human visual perception and ergonomics. Studies have shown that people tend to look in the direction they are moving or facing, which often includes the door. By placing the clock opposite the door, it becomes a natural focal point for time-checking. Furthermore, the American Society of Interior Designers (ASID) recommends that clocks be positioned in a way that they are visible from multiple vantage points within the room, enhancing functionality and accessibility. This approach not only optimizes the clock's visibility but also contributes to the overall aesthetic and usability of the space.