Detailed Pedia

September

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School starts in September in many countries, such as Belgium
WPA poster, 1940
Sapphire, September birthstone
Forget-me-not, September birth flower

September is the ninth month of the year in the Julian and Gregorian calendars, the third of four months to have a length of 30 days, and the fourth of five months to have a length of fewer than 31 days. September in the Northern Hemisphere and March in the Southern Hemisphere are seasonal equivalent.

In the Northern hemisphere, the beginning of the meteorological autumn is on 1 September. In the Southern hemisphere, the beginning of the meteorological spring is on 1 September. 

September marks the beginning of the ecclesiastical year in the Eastern Orthodox Church. It is the start of the academic year in many countries of the northern hemisphere, in which children go back to school after the summer break, sometimes on the first day of the month.

September (from Latin septem, "seven") was originally the seventh of ten months in the oldest known Roman calendar, the calendar of Romulus c. 750 BC, with March (Latin Martius) the first month of the year until perhaps as late as 451 BC. After the calendar reform that added January and February to the beginning of the year, September became the ninth month but retained its name. It had 29 days until the Julian reform, which added a day.

September Events

Ancient Roman observances for September include Ludi Romani, originally celebrated from September 12 to September 14, later extended to September 5 to September 19. In the 1st century BC, an extra day was added in honor of the deified Julius Caesar on 4 September. Epulum Jovis was held on September 13. Ludi Triumphales was held from September 18–22. The Septimontium was celebrated in September, and on December 11 on later calendars. These dates do not correspond to the modern Gregorian calendar.

September was called "harvest month" in Charlemagne's calendar. September corresponds partly to the Fructidor and partly to the Vendémiaire of the first French republic. On Usenet, it is said that September 1993 (Eternal September) never ended. September is called Herbstmonat, harvest month, in Switzerland. The Anglo-Saxons called the month Gerstmonath, barley month, that crop being then usually harvested.

In 1752, the British Empire adopted the Gregorian calendar. In the British Empire that year, September 2 was immediately followed by September 14.

September in Astronomy and Astrology

The September equinox takes place in this month, and certain observances are organized around it. It is the Autumn equinox in the Northern Hemisphere, and the Vernal equinox in the Southern Hemisphere. The dates can vary from 21 September to 24 September (in UTC).

September is mostly in the sixth month of the astrological calendar (and the first part of the seventh), which begins at the end of March/Mars/Aries.

September symbols

Observances

This list does not necessarily imply either official status or general observance.

Non-Gregorian observances: 2020 dates

Month-long observances

United States observances

Food Months

Movable Gregorian observances: 2020 dates

First Wednesday: September 2

First Thursday: September 3

First Friday: September 4

September 5

  • Teacher's Day, Birthday of Dr. Sarvapalli Radhakrishnan (India)

First Sunday: September 6

First Sunday after September 4: September 6

Week of the First Monday: September 6–12

Week of September 10: September 6–12

First Monday: September 6

Nearest weekday to September 12: September 11

Second Saturday: September 12

Saturday after first Monday: September 12–13

Second Sunday: September 13

First Sunday after first Monday: September 13

Week of September 17: September 13–19

Third Tuesday: September 15

September 17 but observed on previous Friday if it falls on a Saturday or following Monday if on a Sunday: September 17

Third Friday: September 18

Third Saturday: September 19

Weekend of the week of September 17: September 19–20

Third Sunday: September 20

Week of Sunday before September 23: September 20–26

Week of September 22: September 20–26

Last week: September 20–26

Last full week: September 20–26

Third Monday: September 21

Observances pertaining to the September Equinox: September 22

Fourth Friday: September 25

Last Friday: September 25

Last Saturday: September 26

Last Sunday: September 27

Fourth Monday: September 28

Last Wednesday: September 30

Last weekday in September: September 30

Fixed Gregorian observances

This page was last updated at 2021-10-26 19:41 UTC. Update now. View original page.

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