As for the people, listening to the official watch at night and observing the rise and fall of the sun during the day can be estimated by long-term habits. Take a sunny day in spring and autumn as an example.
Shi Mao: The time to get up at sunrise in the morning is about before 7 o'clock, which means the sign is "Morning glow is all over the sky", or listening to the night shift. At this time, the troops or the government call the roll at work, which is called "roll call".
At eight or nine o'clock, that is, at dawn, the shop opened, and the sign said "It's late in the morning". At about nine o'clock in the morning, the sun is located in the east, which is about the junction of dawn and dusk.
It's four o'clock from nine to eleven. At this time, it is "southeast of Rizhao" and the weather is getting hot.
From eleven to one, it's noon. At this time, it is "rising day". Because of socializing and shopping on the street, there are the most people on the city streets around twelve o'clock. Therefore, the beheading in ancient times was generally held at the entrance of the food market.
At about one o'clock, the sun is at the southernmost point, which is the handover point at noon.
1:00-3:00 is late, and "the sun is slightly west" is the hottest time of the day. It is also a lunch break.
From three o'clock to five o'clock, "the sun hangs southwest" and the summer heat gradually fades. Around five o'clock, the sun is at the westernmost end, which is probably the time for the handover with the bid section in the later period.
From five to seven, midnight, sunset, it's getting dark, and we have dinner. The weather is getting colder.
The night shift is at seven o'clock, and the official night shift begins.
From seven to nine, at noon, make a watch.
From nine to eleven, Shihai, take the second shift.
From eleven o'clock to one o'clock the next day, at midnight, play the third night.
From 1: 00 to 3: 00, call four more when you are ugly.
From 3: 00 to 5: 00, play 5: 00 in Yin Shi.