September 1st is the 244th day of the year (245th in leap years) in the Gregorian calendar, with 121 days remaining until the end of the year

. It is notable for several historical events, holidays, and observances: Historical Events:

• 1939: Nazi Germany and Slovakia invaded Poland, marking the beginning of World War II in Europe

• 1923: The Great Kantō earthquake devastated Tokyo and Yokohama, killing about 105,000 people

• 1985: The wreck of the Titanic was discovered at a depth of 3,800 meters in the North Atlantic Ocean

• 1991: Uzbekistan declared independence from the Soviet Union

Holidays and Observances:

• National Little Black Dress Day, Ginger Cat Appreciation Day, National Tofu Day (UK), World Letter Writing Day, and many others

• National Forgiveness Day and National Hotel Employee Day in the United States

• Slovakia Constitution Day and Uzbekistan Independence Day

Other Facts:

• The astrological sign for September 1 is Virgo

• The birthstone for September is sapphire, and the birth flowers are associated with the month

In summary, September 1st is a day marked by significant historical events, various national and international observances, and cultural celebrations