Today is Tuesday, because of the rain, the sports meeting will be postponed for two days. What day is today?

Today is Tuesday, because of the rain, the sports meeting will be postponed for two days, that is, Friday. According to the fact that there are seven days in a week, the delay of 1 day is based on this, so a delay of 2 days is Friday.

Test center: calculation of date and time.

Analysis: Today is Tuesday, and the sports meeting will be postponed for two days, that is, the sports meeting will be held on Friday.

Comments: Answering such questions is mainly based on the law of seven-day cycle every week, and periodic answers are adopted.

Extended data:

Historical origin

1, week originated in Babylon as a time period. The world-wide seven-day week system was first formulated by the Roman emperor Constantine the Great, who officially declared seven days as a week on March 7th, 32 1 year, and this system has been in use ever since. In China, when Christianity spread in China in the late Ming and early Qing Dynasties, Zhou gradually became known. After the use of the Gregorian calendar was stipulated in the Republic of China, the week gradually became popular.

2. Zhou is called Seven Obsidian in China. During the Xia, Shang and Zhou Dynasties in China, Seven Obsidian refers to the seven main stars, such as the sun, the moon and the five planets, which was an important part of astronomical astrology at that time. China's seven obsidians did not begin as a unit of time.

In the west, the ancient Babylonians first used seven days as a week. Later, the Jews spread it to ancient Egypt and from ancient Egypt to Rome. After the 3rd century AD, it spread widely to European countries. Both Islam and Christianity have weekly religious worship activities, so in many dialects, "worship" gradually has the meaning of "week".

The origin of the week should be the cycle connected with the moon, because seven days is about a quarter of the moon's week.

4. In ancient China, the ancients regarded the sun, the moon and the five planets of gold, wood, water, fire and earth as seven nights, also known as seven wonders. In the Preface of Biography of the Liang Dynasty by Fan Ning in the Eastern Jin Dynasty, there are seven records of "interference" among prostitutes.

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