What's twelve hours called?

The name of twelve hours is as follows.

The names of twelve o'clock are Zishi, Ugly Time, Yin Shi, Shi Mao, Chen Shi, Shi Si, Noon, Weishi, Shenshi, Youshi, Qushi and Shihai. Twelve o'clock is also called midnight, crow, pingdan, sunrise, eclipse, corner time, noon and sundial.

The ancient working people divided a day and night into twelve periods, each of which was called an hour, and twelve hours could also refer to a day. An hour in ancient times is two hours in modern times, a moment in modern times is 15 minutes, a cup of tea in modern times is five minutes, and a wick in modern times is two minutes and 30 seconds. After the Song Dynasty, twelve o'clock was divided into two parts, such as the beginning and the end. Every beginning and end is now an hour. Now our day is 24 hours, but some people still use ancient time, such as when they were born.