1What day is October 5th?

According to the daily calendar,1October 5th 165438+2023 is Sunday, which is the 45th week of 2023 and the 2309th day of 2023, with 56 days to go before the end of the year.

Week, also known as week, is a unit of time and the basis for formulating working days and rest days. Zhou originated in Babylon as a time period. On March 7, 32 1 year, the Roman emperor Constantine the great officially established the world week system. It was called "Seven Obsidian" in ancient China. During the Xia, Shang and Zhou Dynasties in China, Seven Obsidian refers to seven main stars, such as the sun, the moon and the five major planets, which was an important part of astronomical astrology at that time. Later, it was borrowed as a unit of seven days, so it was called "week".