Was there a week and a month in ancient times?

The concept of "week" was introduced to China during the Tang Dynasty, and in traditional astronomy, there is the concept of week. However, in daily life, the week is seldom used to keep time, and a similar concept of time is expressed in China by the word "旬".

Sunday (日曜日) is Sunday, Monday (月曜日), Tuesday (火曜日), Wednesday (水曜日), Thursday (木曜日), Friday (金曜日), and Saturday (土曜日). The Sukyo Sutra was later introduced to Japan through the Tang dynasty student Kukai in the Heian period and became an important classic of Japanese Sukyo or Tantric astrology, and also served as the basis for the Chinese term for each day of the week based on the Seven Observations. China after the founding of the Republic of China changed the name to Sunday to six, but in Japan, South Korea and North Korea still use this name

In ancient China there is no concept of worship, only the concept of greeting. The so-called greetings of wait is a time concept, in ancient China, five days for a wait, three wait for a qi, two qi for a section. A festival is a month. So there are twenty-four qi seasons in a year.

Date method China's ancient date method there are four main:

(1) ordinal date method. For example, "Plum Blossom Ridge Records": "On the 25th, the city fell, Zhonglie drew his sword and cut himself." Xiang Ji Xuan Zhi: "On the night of three to five, the bright moon was halfway up the wall. ... 'Sanwu' refers to the fifteenth day of the lunar calendar.

"Huanghuagang seven - twelve martyrs of the preface": "the death of the tragedy, to the Xinhai March 29 siege of the two Canton Governor's Office of the service for the most.

(2) stem and branch date method. Such as "the battle of dishes": "summer April Xin Si, defeated the Qin army in dishes.'" April Xin Si" refers to the thirteenth day of the fourth month of the lunar calendar; "Shi Zhongshan" "Yuanfeng seven years in June Ding Chou", that is, the ninth day of the sixth month of the lunar calendar;

"Mount Tai" "is the month of Ding Wei", referring to the eighteenth day of the month. Ancient people also used the Heavenly Stem or Earthly Branches alone to indicate specific days. For example, "Rituals - Tan Gong" "Zi Mao not happy", "Zi Mao", referring to the bad or taboo days.

(3) moon phase date method. Refers to the use of "Shuo, crescent moon (fei), hope, both hope, obscure" and other special names to indicate the phase of the moon to date. The first day of the month called Shuo, the first three days of the month called crescent moon, the middle of the month called the hope (small month 15, big month 16), the day after the hope is called both hope, the last day of the month called Hi. Such as "sacrifice sister text" "this July hope day thing also"; "five people tombstone" "in Dingmao March hope"; "Red Cliff Fu" "the autumn of Nongxu, July both hope"; "and his wife's book" "the first three or four months of marriage, suitable for the winter before and after the date of hope".

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(4) The stem and branch moon phase method. The dry branch is placed in front of the moon phase is listed after. For example, "Ascending Mount Tai": "Wushen obscure, five drums, and Ziying sitting in the Sun Guan Pavilion.

The 24 Solar Terms (The 24 Solar Terms) refers to the 24 specific seasons in the Chinese lunar calendar, based on the Earth's position in the ecliptic (i.e., the Earth's orbit around the Sun) and the development of the Earth's position in the ecliptic (i.e., the orbit of the Earth around the Sun), each corresponding to the Earth in the ecliptic for every 15 ° of movement to the certain position. The twenty-four solar terms are further divided into 12 mid-qi and 12 nodes, one after the other. The twenty-four solar terms reflect the Sun's annual visual movement, so in the Gregorian calendar their dates are basically fixed, the first half of the festival on the 6th, the mid-qi in the 21st, the second half of the festival on the 8th, the mid-qi in the 23rd, both before and after the difference of no more than 1-2 days.