Next, I decided to highlight and focus on what Wikipedia says about noon:
“Noon is the moment in the middle of the day between sunrise and sunset (the midpoint of the day), the moment of the Sun’s upper culmination – solar noon. Noon is also commonly referred to as the time when clocks show 12:00 local time, although solar noon can occur earlier or later than 12:00. Solar noon is the moment of the Sun’s upper culmination when, for an observer at a given point on the planet, the center of the solar disk passes through the celestial meridian and reaches its highest elevation above the horizon. Due to the fact that the Earth moves around the Sun in an elliptical orbit, and its axis of rotation is tilted relative to the plane of its orbit, the time of solar noon changes throughout the year by approximately ±15 minutes from the mean value (see solar day and equation of time). Thus, the following concepts are used: true noon – the moment of the Sun’s upper culmination; mean noon – the moment of the upper culmination of the so-called ‘mean Sun,’ a fictional point moving uniformly along the celestial equator at such a speed that in its annual motion, it always passes through the vernal equinox at the same time as the true Sun.” Then there is midnight: “Originally – the moment in the middle of the night, between sunset and sunrise (the midpoint of the night), the moment of the Sun’s lower culmination – astronomical midnight. Midnight is also commonly referred to as the time when clocks show 00:00 (sometimes 24:00) local time, although astronomical midnight can occur earlier or later than 00:00. Astronomical midnight is the moment of the Sun’s lower culmination. Due to the fact that the Earth moves around the Sun in an elliptical orbit, and its axis of rotation is tilted relative to the plane of its orbit, the time of astronomical midnight changes throughout the year by approximately ±15 minutes from the mean value (see solar day and equation of time). Thus, the following concepts are used: true midnight – the moment of the lowest culmination of the visible daily movement of the Sun; mean midnight – the moment of the lower culmination of the so-called ‘mean Sun,’ a fictional point moving uniformly along the celestial equator at such a speed that in its annual motion, it always passes through the vernal equinox at the same time as the true Sun.” Next, there is an interesting separate mention – “afternoon” – “a stable linguistic form referring to the time of day following twelve o’clock noon and preceding evening. In Russian, the expression ‘second half of the day’ is also used. In English, this time is clearly defined by the word afternoon. In German, it is called Nachmittag, in Spanish – tarde, in Italian – pomeriggio.” Again, I notice that when they don’t know what else to write, they start focusing