October 1, 2023, is a Sunday. Here are some events and observances that occurred on that day:

• It was the 3rd day of Sukkot, a Jewish observance.
• It was National Hair Day, International Coffee Day, International Day of Older Persons, International Raccoon Appreciation Day, and National Black Dog Day.
• The US celebrated Breast Cancer Awareness Month and National Cyber Security Awareness Month.
• The Peoples Republic of China celebrated Chinese National Day.
• The Penrith Panthers won the 2023 NRL Grand Final.
• A suicide bomber blew himself up outside the Interior Ministry in Ankara, Turkey, injuring two people.

Additionally, Congress passed a temporary funding bill, and the Supreme Court began a new term with major cases awaiting.