'Noon' means 'midday' or 12 o'clock during the day.

Noon is the time exactly halfway through the day (12.00-12:00 in the 24-hour clock and 12:00 PM-12:00 PM in the 12-hour clock). Midday also means noon, although this also means around noon, or very early afternoon.

From a scientific perspective, noon is important because it marks the point at which the sun is at its highest point in the sky. This has implications for many aspects of our lives, from agriculture to astronomy. For example, farmers use noon as a reference point for planting and harvesting crops.

High noon means the same as noon. Journalists sometimes use high noon to refer to a crisis or event which is likely to decide finally what is going to happen in a conflict or situation. With the coming of the Internet age, it looked like high noon for the nation's movie theaters.