What happened on September 1 ?

In the Eastern Orthodox Church, the new liturgical year begins on September 1. Also see September 1 (Eastern Orthodox liturgics).

Church of England - Saint Giles

Cameroon - Jour d'Union Nationale Camerounaise

Libya - Revolution Day (1969)

Russia - Knowledge Day

Singapore - Teacher's Day

Slovakia - Constitution Day

Uzbekistan - Independence Day (from USSR, 1991)

Start of the season when oysters are fit to eat (when month names contain an "R")

Start of cold season.

Start of the partridge-shooting season ("St.Partridge").

Start of new school year in many countries.