What does twelve o'clock in the Book of Changes mean? Thank god, help me.

Twelve o'clock: The beginning of twelve o'clock is not directly related to the Book of Changes. Twelve o'clock system was used in the Western Zhou Dynasty. In the Han Dynasty, it was named Midnight, Crow, Pingdan, Sunrise, Food Time, Horn, Japan-China, Sundial, Sunset, Dusk and Man's Decision. It is also expressed by the twelve earthly branches, and it is the child time from 23: 00 to 1 at midnight, the ugly time from 1 to 3: 00, and the Yin Shi time from 3: 00 to 5: 00, which are recursive in turn. Midnight, also known as midnight and midnight: the first hour of twelve o'clock. (23: 00 to 0 1 hour). Ugly cock crow, also known as pheasant: the second hour of twelve o'clock. (0 1 to 03: 00). Yin Shiping Dan, also known as Dawn, Dawn and Sundan, etc. Time is the alternation of day and night. (03 o'clock to 05 o'clock). Sunrise in Shi Mao, also known as the beginning of the day, dawn and rising sun, refers to the time when the sun just appeared and Ran Ran first rose. (05:00 ~ 07:00) When eating in the morning, it is also called breakfast. When the ancients ate in the morning, it was breakfast time (07:00 ~ 09:00). Forty holes, also known as Yu Ri, etc. : near noon, call the corner. (09: 00 to 1 1: 00). Noon noon, also known as the sun, noon, etc. : (1 1 to 13). Not long ago, it was also called sunset, sun center and so on. : The sun sets in the west. (from 13 to 15). When applying for regular feeding, it is also called late eating in a day shop. : (from 15 to 17). As time goes by, it is also called sunset, sunset and evening: it means when the sun goes down. (from 17 to 19). Dusk, also known as sunset, sunset glow, dusk, etc. At this time, the sun has set and the sky will be dark. The world is dark and everything is hazy, so it is called dusk. (from 19 to 2 1). When the sea was dark, people had stopped their activities and had a rest. Calm means quiet. (2 1 to 23: 00).