In ancient times, what did the alias of twelve o'clock mean?

In ancient times, because there was no clock, no mobile phone and no advanced technology, they defined 12 as coming to see you day and night.

I remember grandpa's mother didn't know how to look at her watch when she was a child, because he was eighty or ninety years old. He looks at the time according to the sun, and his words are very accurate.

In ancient times, industrious and intelligent people divided this 12 hour into our present time. They all judge time according to the appearance of the sun in the morning and the laws of nature. Many times I also watch the weather optimization, and then combine my own experience to make 12 hours.

According to historical records, twelve o'clock has been used in the Western Zhou Dynasty, which are midnight, crow, pingdan, sunrise, eclipse, angle, sun, sundial, sunset, dusk and people's decision. It is also represented by the twelve earthly branches, with midnight at 23:00- 1:00 as a child, 1:00-3:00 as a clown, 3:00-5:00 as Yin Shi, 6:00-7:00 as Shi Mao and 7:00-9:00 as a clown.

In ancient times, every hour had its meaning, and every hour was used as a reminder. When and what should ancient people do before? They all infer from the weather changes and their own experiences. At twelve o'clock, when they don't have a clock, they judge when to get up and what to do according to twelve o'clock.

In ancient times, 12 hour was used to remind hard-working people when to do something. 12 hour is equivalent to our current clock and mobile phone time category.