Inventor's Day
September 29, Sunday
The Inventors' Day in Argentina has been celebrated since 1986 and is held yearly on 29 September, the birthday of the inventor of the ballpoint pen, László József Bíró.
Inventor's Day in other years
- 2021 September 29, Wednesday
- 2022 September 29, Thursday
- 2023 September 29, Friday
- 2025 September 29, Monday