United Nations celebrates World Post Day every year on 9 October. 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. The Posts in many countries use the event to introduce or promote new postal products and services.
The day marks the establishment of the Universal Postal Union in 1874 in the Swiss Capital, Bern. It was declared World Post Day by the UPU Congress held in Tokyo, Japan in 1969.
Source: The United Nations