World Post Day is celebrated each year on 9 October. The event was declared by the 1969 Universal Postal Congress in Tokyo as a means to mark the anniversary of the Universal Postal Union's (UPU) creation in 1874.
The purpose of World Post Day is to bring awareness to the Post's role in the everyday lives of people and businesses, as well as its contribution to global social and economic development. [...]
Although World Post Day is not guided by a particular theme, the UPU's latest poster design embodies the UPU's three strategic pillars: innovation, integration and inclusion.