December 3rd is the 337th day of the year in the Gregorian calendar (338th in a leap year), leaving 28 days remaining in the year.

Calendar facts

• In non-leap years, December 3rd is day 337 of 365; in leap years, it is day 338 of 366.

• In 2025, December 3rd falls on a Wednesday.

Observances on December 3

• December 3rd is recognized by the United Nations as the International Day of Persons with Disabilities, which promotes the rights and well‑being of people with disabilities worldwide.

• Various countries and organizations also mark additional national or thematic days on December 3rd, such as awareness and charity observances.

Historical note

• Across history, many political, scientific, and cultural events have occurred on December 3rd, including early demonstrations of neon lighting and significant political developments listed in historical calendars.